Introduction

What Rea-Sixty is

Rea-Sixty is a REAPER extension that drives the SSL UF8 and UC1 control surfaces directly from REAPER. It replaces SSL 360° on the host side. One extension file installs into REAPER’s UserPlugins directory; SSL 360° no longer needs to run, the surface is no longer behind a virtual MIDI port, and the per-track SSL plug-in that SSL 360° requires for track colours is no longer needed.

What goes out on the USB wire is the same byte protocol SSL 360° uses, re-emitted by REAPER. No SSL binaries, firmware, or trademarks are redistributed.

What you need

• REAPER on macOS (Apple Silicon or Intel), Windows (x64), or Linux (x86_64). Tested against REAPER 6 and 7 through 7.75.
• An SSL UF8 plugged in over USB-C. UC1 is supported optionally; UF8-only or UC1-only rigs are fine.
• ReaImGui (install via ReaPack from Extensions → ReaPack → Browse packages → ReaImGui). Without ReaImGui the Settings window stays empty, but hardware control still works.
• SSL 360° must not be running. It claims the UF8/UC1 vendor interface exclusively. If it is running when REAPER starts, the surface will not appear and REAPER’s Console shows an error.

Runtime dependencies (libusb, hidapi) ship inside the platform archives; no separate install needed.

Versioning

This manual documents Rea-Sixty v0.5.9. Earlier manuals (anything dated before 2026-08-27) are superseded.

Each release also carries a codename, shown on the About tab below the version. The codename has no functional role — just makes the release easier to refer to in conversation.

Installation

Via ReaPack (recommended)

In REAPER:

1. Extensions → ReaPack → Manage repositories → Import/export → Import repositories
2. Paste: https://github.com/acklin83/reaper-scripts/raw/main/index.xml
3. Browse packages → filter Rea-Sixty → Install
4. Restart REAPER
5. Preferences → Control/OSC/Web → Add → Rea-Sixty

First-run setup buttons live in Settings → About:

• Windows: Install UF8/UC1/UF1 WinUSB driver (one UAC prompt)
• Linux: Install Linux udev rule (one pkexec prompt)
• macOS: no setup needed; IOKit already grants libusb access to the device class

Manual install

Download from https://github.com/acklin83/Rea-Sixty/releases:

• Mac: rea-sixty-mac-v<version>.zip — three Apple-notarised dylibs. Unzip into ~/Library/Application Support/REAPER/UserPlugins/.
• Windows: rea-sixty-win-v<version>.zip — three DLLs. Unzip into %APPDATA%\REAPER\UserPlugins\.
• Linux: rea-sixty-linux-v<version>.tar.gz — reaper_rea-sixty.so plus the two bundled libraries (libusb-1.0.so.0, libhidapi-hidraw.so.0), the udev rule, and INSTALL.txt. Unpack all three files together into ~/.config/REAPER/UserPlugins/ — the plugin loads the libraries from its own folder, so no apt install is needed. Then apply the udev rule (or use the Install Linux udev rule button in Settings → About).

The Stream Deck Companion plugin (com.reasixty.companion.streamDeckPlugin) is attached to each release separately — it is not part of the ReaPack package. Download it and double-click it; the Stream Deck app installs it.

Enabling the surface

After install, restart REAPER, then:

Preferences → Control/OSC/Web → Add → Rea-Sixty

No MIDI device assignment needed — the extension claims the UF8/UC1 over USB on its own.

Uninstall

• Via ReaPack: Browse packages → right-click Rea-Sixty → Uninstall.
• Manual: delete reaper_rea-sixty.{dylib,dll,so} plus the two runtime libraries (libusb, libhidapi/hidapi) from REAPER’s UserPlugins directory. Remove the Control Surface entry under Preferences → Control/OSC/Web.

Concepts

A handful of terms appear throughout the manual.

Focused track

The track REAPER considers “selected first” — GetSelectedTrack(nullptr, 0). UC1 follows it by default; the SSL Channel Strip / Bus Compressor section reads the focused track’s plug-in.

FX vs Instance

• FX = any audio effect on a REAPER track.
• Instance = the surface-mapped subset only:
  • SSL Channel Strip 2 + 4K B/E/G variants
  • SSL Bus Compressor 2
  • SSL 360° Link
  • Combo plug-ins of the above
  • User-mapped UF8-only plug-ins with uf8Mode set in their FX Learn catalog entry

Every Instance is an FX. Most FX are not Instances.

The distinction matters for two pairs of cycle actions:

• FX Cycle walks every FX on the track.
• Instance Cycle walks only Instances on the track.

Six action names follow the same rule (per-surface × per-scope × per-cycle-kind). See the Cycle actions section under Native actions.

FX-Cursor

A per-track pointer at the last FX a cycle landed on (the index the next cycle step proceeds from). Persistent across mode changes. When a cycle lands on a learned Instance, the cursor also updates the per-domain Instance index so SSL Strip Mode / UF8 Plug-in Mode follow.

Plug-in identity

When you rename an FX instance in REAPER’s FX chain (“Townhouse Comp” instead of the factory name), Rea-Sixty uses the rename everywhere the colour-bar would otherwise show the factory short name. Internally the rename is resolved by FX-GUID, so reordering or chunk-replacing the FX preserves the binding to the identity.

Domain

The Instance domain (ChannelStrip, BusComp, or None for UF8-only user maps). Drives which UC1 section refreshes when the Instance cursor moves.

Selection Modes

Each strip’s SEL button is hijacked by the active Selection Mode. Toggle modes via the dedicated buttons on the UF8 (mapped through Bindings) or via the per-mode builtin actions.

The modes are global, so a UF1 follows them too. On the UF1 the mode retargets its single SEL, and the channel it acts on is the one the fader side is showing: dial the channel encoder to the track you want, then press SEL.

NORM

The default — SEL toggles REAPER track selection. V-Pots default to Pan. No automatic colour-bar overrides on the upper LCD.

REC

Each strip’s SEL toggles arm. V-Pots stay on Pan unless REC + RME integration is on (next mode).

On the UF1, SEL toggles arm for the channel on the fader, and the SEL LED turns red: bright when the channel is armed, dim when it is not. Track selection is invisible while the mode runs, which is the point: what you need to see when you are arming is what is armed. Anything you have bound to SEL yourself (a double press, a long press) still fires.

REC + MON

Each strip’s SEL toggles arm + monitor. Otherwise like REC. Same on the UF1.

REC + RME (TotalReaper integration)

A sub-mode of REC / REC+MON. When Settings → Modes → REC → “Enable RME / TotalReaper integration” is on and TotalReaper is installed:

• V-Pot rotation = preamp gain ±1 dB (per the V-Pot rotation → Preamp gain toggle)
• V-Pot push / Cut / Solo / Polarity = configurable TotalReaper actions (48V toggle, pad toggle, phase invert, AutoLevel toggle).
• Shift+V-Pot rotation = change input channel
• The strip’s colour bar shows the input name (“Mic 1”, “Line 3”) instead of the CS variant label

The UC1 and the UF1 get the same thing on their own controls, with their own assignments in Settings, so you can opt one surface in without the other. On the UC1 it is Encoder 2, Cut, Solo and Polarity. On the UF1 it is the V-Pot above the fader (rotation and push), Cut and Solo, all acting on the channel the fader side is showing. Out of the box all three surfaces come set up the same way: 48V on the push, pad on Cut, phase on Solo.

Every surface reads out the same way, because a UF8 strip and the UF1 channel are the same channel strip: 48V Pd Ph on the left of the value line, the preamp gain on the right, the V-Pot readout bar under it riding the gain from 0 to +75 dB, and the channel-strip type cell naming the hardware input (“MA 5”, “An 1”) in place of the plug-in name. A track TotalReaper has said nothing about keeps its normal readout rather than showing a made-up 0.0 dB.

While REC + RME is engaged, the UF1’s Cut and Solo LEDs show the TotalMix state they are switching, not the track’s mute and solo. With the Extender on they keep working on the channel the fader side shows, including in a send view: a send has no preamp, so the preamp actions win there.

AUTO

The strip’s SEL cycles through automation modes (Off → Read → Touch → Latch → Write → Trim, then back). V-Pots become read-only automation-mode indicators.

When Settings → Modes → AUTO → “Hide Trim/Read tracks while in AUTO mode” is on, tracks set to Trim or Read disappear from the surface so only writing-armed tracks remain visible.

Leaving AUTO restores the previously-visible track list and refocuses the surface on the selected track.

If a Selection Set is active and Settings → Modes → AUTO → “Selection-Set auto-mode” is set to a value other than None, recalling a selset in AUTO mode auto-arms the set’s tracks to that automation mode. Leaving AUTO reverts those tracks to Trim/Read.

FX Cycle (V-Pot Sel-Mode)

Each strip’s V-Pot rotation walks every FX on the strip’s track. Push opens the active FX’s floating window. The strip’s colour bar shows the FX-cursor’s current FX name.

Instance Cycle (V-Pot Sel-Mode)

Each strip’s V-Pot rotation walks only Instances (CS / BC / UF8-Mode-learned) on the strip’s track. Push opens the active Instance’s floating GUI. No-op when the strip’s track has fewer than 1 Instance.

When the cycle lands on a learned Instance the per-domain Instance index updates so SSL Strip Mode + UF8 Plug-in Mode + the UC1 sections follow.

Channel Encoder modes

The large notched CHANNEL encoder (right of the strips, pushable, surrounded by the cursor pad) runs one of twelve modes. Switch with the corresponding Encoder Mode → … action. The current mode persists across REAPER restarts.

Mode	Rotation acts on	Notes
Channel Select	Move REAPER track selection ±	Default mode. Strips re-bank to keep selection visible.
Nudge	Playhead nudge	Step size is Rea-Sixty’s own, under Settings → Modes → Nudge: an amount plus a unit, one grid step by default
Mousewheel	Synthesised scroll-wheel under the mouse cursor	Use to scroll plug-in windows or Project Browser
Markers	Step prev / next marker	Stops playback while seeking
Bank by 1ch	Shift the surface 1 strip left/right	Sub-bank precision
Last Touched Param	Step the last-touched REAPER param ±	Fine increments
Instance (Instance Cycle)	Walk Instances on the focused track	Same behaviour as the V-Pot Sel-Mode Instance Cycle, focused-track scope
FX Cycle	Walk every FX on the focused track	Focused-track scope
Cycle Instance (across tracks)	Walk Instances on the focused track, then cross to the next track	One detent per track boundary; lands on the neighbour’s first (fwd) / last (back) Instance. Empty neighbour is still selected (dead detent). Hard-stops at the project edge, no within-track wrap.
Cycle FX (across tracks)	Walk every FX on the focused track, then cross to the next track	Same cross-track behaviour as above, for all FX. SSL 360°-native feel.
Selset Cycle	Step through populated Selection Set slots (off → 1 → 2 … → off)	Skips empty slots

Shift + rotation re-banks ±1 strip in every mode (alias for Bank by 1ch).

The encoder also drives SEL-Mode cycle when Settings → Modes → FX / Cycle → “UF8 Channel Encoder” is ticked AND a cycle-kind Selection Mode is engaged. In that override the encoder steps the active Selection-Mode cycle instead of its normal mode.

Nav Mode (Markers + Regions)

Modes → NAV — marker and region navigation, the per-surface overlay and the encoder push actions.

Nav Mode is a surface overlay — separate from the Selection Modes — that turns the UF8 strips into a live marker / region jump panel. It can be active alongside any Selection Mode; toggling it does not change the active Selection Mode.

Engaging Nav Mode

Three bindable builtins:

• Nav Mode (Markers & Regions): toggle — toggle on / off, opens the default view (set in Settings → Modes → NAV).
• Nav Mode: Markers only (no drill) — toggle on / off, locks the view to MarkersAll (no drill into regions).
• Nav Mode: Regions only (no drill) — toggle on / off, locks the view to Regions (region presses jump only, no drill).

Bind any of these to a UF8 / UC1 button in Settings → Bindings. The same button toggles Nav Mode off again.

Three views

• Regions — each strip is one REAPER region. Top-soft-key press jumps the transport to that region’s start (and, by default, drills into its markers).
• MarkersInRegion — markers inside the region the playhead is in. Auto-rolls into the next region when the playhead crosses out.
• MarkersAll — flat list of every marker in the project.

The default view on Nav-Mode entry is configurable (Settings → Modes → NAV → Default view): Regions / MarkersInRegion / MarkersAll / Last used.

What the UF8 strips show

Per strip while Nav Mode is active:

• Top-soft-key — press = jump (and, in Regions view, optionally drill). LED colour = the region / marker’s REAPER colour (or grey if Color-bar source: Force palette grey is set).
• Scribble strip upper row — the marker / region name. One without a name of its own reads Region 3 / Marker 7, using the number REAPER shows in the ruler, so an unnamed entry is still an entry rather than a blank strip. The UC1’s carousel and the region readout use the same fallback.
• Scribble strip lower row — configurable: Off (V-Pot value preserved) / Index (R03, M07) / Timecode (MM:SS).
• Colour bar — the marker / region’s colour (or palette grey, per setting).

Paging

When the project has more items than 8 strips, the overlay pages 8 at a time. Pagination via:

• CHANNEL encoder rotation while Nav Mode is active — pages forward / backward.

UC1 Encoder 2 takeover

Off by default. When Settings → Modes → NAV → Take over UC1 Encoder 2 is on:

• Rotation moves the cursor through items (sets a cursor pin that suppresses auto-follow until the playhead catches up or you push).
• Plain push — Jump + Drill / Jump only / Drill only (configurable).
• Shift + push — Drill / Back / Toggle View (configurable).
• Long-press (~500 ms) — Back / Add marker at playhead / Disabled (configurable).
• The UC1 central LCD switches to a marker carousel showing prev / curr / next items.

While a view-lock toggle (Markers-only / Regions-only) is engaged, shift and long-press are suppressed — only plain push fires.

Auto-Follow

Settings → Modes → NAV → Auto-Follow playhead / edit cursor (checkbox).

When on, the cursor strip tracks whichever marker / region the playhead is on. In MarkersInRegion view, the overlay auto-rolls into the next region when the playhead crosses out (only after the playhead was first observed inside the current filter region — suppresses the snap-back when you drill manually during playback).

Manual cursor movement (UC1 Encoder 2 rotation) pins the cursor and pauses auto-follow until the playhead catches up, or you commit (push), exit Nav Mode, drill, or change view.

Region-press behaviour

Settings → Modes → NAV → Region-press behaviour:

• Jump + Drill (default) — press a region’s top-soft-key → transport jumps to region start AND the overlay drills into that region’s markers.
• Jump only — transport jumps; overlay stays on the Regions view.
• Drill only — overlay drills; transport stays put.

RegionsOnly view-lock always suppresses Drill regardless of this setting.

UF8 hardware

The UF8 has no transport keys, no Layer LED on Layer 3 on some units, no jog wheel. The layout below mirrors SSL’s published reference (User Guide Rev 11, p.14-17).

Strips (×8)

Per strip, from top to bottom:

Control	Function (NORM Selection Mode)	Notes
Top soft-key	SSL Soft-Key for this strip in the current PAGE bank	Default action SSL Soft-Key (current bank, slot 0..7). Rebindable.
Colour TFT (scribble strip)	Upper zone = track name / mode-dependent. Lower zone = parameter readout. Track-colour bar at the bottom.	Hijacked by Plug-in Modes for parameter / FX names.
V-Pot rotation	Pan	Re-maps per Selection Mode (REC + RME → preamp gain; AUTO → automation indicator; FX Cycle / Instance Cycle → walk FX/Instances). In Pan, turning records track-pan automation in Touch mode and holds on release.
V-Pot push	Centre Pan	In FX Cycle / Instance Cycle Sel-Modes → open the active FX’s GUI.
SOLO	Solo	LED colour follows REAPER track colour when Settings → Appearance → Surface display → “SEL LED follows REAPER track colour” is on.
CUT	Mute
SEL	Selection-Mode dependent	NORM = exclusive select; REC = arm; REC+MON = arm + monitor; AUTO = cycle automation mode. Long-press on a folder parent toggles spill.
Capacitive touch (fader)	Drives REAPER’s “touch” automation	Alt/Option held during touch → snap back on release (Settings → Behaviour → Keyboard).
100 mm motorised fader	Track volume	Full 16-bit pitch-bend protocol.

Above the strips: 8 Top Soft-Keys + bank selectors

A row of 8 buttons above the V-Pots = Top Soft-Keys 1..8. By default each one focuses the SSL plug-in parameter at its strip position within the current PAGE bank (SSL 360° factory behaviour). Rebindable per-button.

Left of the soft-keys: 6 small bank-selector buttons — V-POT + 1 / 2 / 3 / 4 / 5. Each picks one of the 6 SSL CS soft-key banks (or 2 BC banks while in Bus-Comp). Default action Select soft-key bank (param 0..5).

Right of the strips: CHANNEL encoder + cursor pad

A single block:

• Large notched CHANNEL encoder (push-button rotary). Rotation drives the active Channel Encoder mode (see chapter Channel Encoder modes). Push = mode-specific.
• Cursor pad — 5 buttons (4 arrows + central circle) surrounding the encoder.
  • Default behaviour: zoom via the Zoom in vertically / Zoom out vertically / Zoom out horizontally / Zoom in horizontally / Zoom to fit project actions (REAPER actions 40111 / 40112 / 1011 / 1012 / 40295).
  • SSL’s reference UG also documents a “Cursor-Transport” mode (press-and-hold CHANNEL encoder to enter; ↓=Stop ↑=Play ←=Rew →=FF centre=Rec). Rea-Sixty leaves these as the standard zoom bindings — rebind them to transport actions via Settings → Bindings if you want SSL’s behaviour.
• NAV / NUDGE / FOCUS mode buttons (around the encoder; ButtonId entries Nav, Nudge, EncFocus). Default builtins switch the encoder to that mode.

Above the encoder block: Q1 / Q2 / Q3 (“Quick” user keys). Default bindings — Q1 = CS, Q2 = BC, Q3 = I/O meter (matches SSL’s locked Plug-in Mixer assignment).

Right of the encoder column: NORM / REC / AUTO

Three buttons (Selection Mode block). Default unbound — assign Selection Mode → NORM (SEL Button) / Selection Mode → REC (SEL Button) / Selection Mode → AUTO (V-Pot) (or any other Selection Mode action, including Selection Mode → FX Cycle (V-Pot) / Selection Mode → Instance Cycle (V-Pot)) via Settings → Bindings.

Above NORM/REC/AUTO: AUTOMATION row

Six buttons — Read / Write / Touch / Latch / Trim / Off. Default actions Automation: Read, Automation: Write, Automation: Touch, Automation: Latch, Automation: Trim, Automation: Off / Trim (set the automation mode of the focused track).

Below the strips: PLUGIN / CHANNEL / mode row

Button	Default
PLUGIN	Toggles SSL Strip Mode (Toggle SSL Strip Mode). With Shift held: Toggle SSL Strip Mode (with GUI).
CHANNEL	Home (clear routing toggles) — clear send / receive routing toggles so V-Pots / faders return to track volume + pan.
BANK ← / BANK →	Scroll ±8 strips. In UF8 Plug-in Mode → flip between fader-banks A / B (for 16-strip plug-ins). In a “of focused track” routing view → page the send / receive list by 8 (see Send and Receive views).
PAGE ← / PAGE →	Step the SSL Soft-Key PAGE bank prev / next (6 CS banks + 2 BC banks).
SEND / PLUGIN 1..8	8 buttons. Default 8 sends of focused track / 8 receives of focused track (param N) — toggle the matching send / receive view.

FLIP / PAN / FINE

Three buttons in their own cluster:

Key	Default action
FLIP	Toggle FLIP (fader ↔ V-Pot) — swap fader and V-Pot values for the active mode.
PAN	Toggle V-Pots → Pan — force V-Pots to Pan regardless of the active Selection Mode. Escape hatch from cycle / REC / AUTO modes.
FINE	Modifier: Shift / Fine (double-click latches) (the SSL “FINE” = “Shift” key). Double-click latches it on; press again to unlatch. With Settings → Devices → V-Pot / encoder feel → Shift activates Fine mode on, holding this also drops V-Pot / encoder step size to ×0.25 (faders unaffected).

Layer keys

LAYER 1 / 2 / 3 — three SSL DAW layers. Bindable. Layer 3 LED on certain UF8 units does not light up — confirmed hardware quirk, not a Rea-Sixty bug. Layer functionality itself works.

360° key

Default action Open / Close Rea-Sixty Settings — opens / closes the Rea-Sixty Settings window.

Foot-switch jacks

FS1 / FS2 on the back (1/4” TS, normally-closed momentary). No factory bindings — assign via Settings → Bindings (ButtonId Foot1 / Foot2).

What the UF8 does NOT have

For clarity (Rev 11 reference, p.14-17):

• No dedicated Play / Stop / Record / Loop keys. Transport-on-cursor-pad is a press-and-hold-CHANNEL feature; Rea-Sixty leaves the cursor pad on zoom by default.
• No jog wheel. The CHANNEL encoder is the only large rotary.
• No master fader.
• No HUI/MCU display lane apart from the 8 strip scribble LCDs.

UC1 hardware

The UC1 mirrors the SSL Channel Strip 2 + Bus Compressor 2 controls on a dedicated unit, plus a central control panel for navigation. When UC1 is plugged in alongside UF8, it auto-engages on the focused REAPER track and follows the focused Instance.

The UC1 has no hardware mode-switch — the Channel Strip and Bus Compressor sections are always live, each driving whichever CS or BC Instance is currently in focus on the focused track.

Channel Strip section — left side (EQ + Filters, 12 knobs)

Top to bottom on the left half:

• LPF / HPF — two filter knobs (low-pass + high-pass frequency).
• HF — Gain + Freq (2 knobs).
• HMF — Gain + Freq + Q (3 knobs).
• LMF — Gain + Freq + Q (3 knobs).
• LF — Gain + Freq (2 knobs).

Plus the EQ-section buttons: HF Bell (HF shape), EQ Type (E vs G EQ curve), EQ In (EQ section bypass), LF Bell (LF shape).

Channel Strip section — right side (Dynamics + Channel, 7 knobs + 7 buttons)

• Compressor: Threshold + Ratio + Release (3 knobs).
• Gate / Expander: Threshold + Range + Hold + Release (4 knobs).

Buttons:

• Fast Att Comp — fast attack on the compressor.
• Peak — peak detection.
• Dyn In — Dynamics section bypass.
• Expand — switch the gate into expander mode.
• Fast Att Gate — fast attack on the gate.

Channel section (lowest row of buttons):

• Polarity (phase invert)
• SC Listen (side-chain monitor)
• Solo Clear
• Solo / Cut (track operations — routed to REAPER’s track ops)
• Channel In (channel input enable)
• Fine (FINE / Shift modifier on UC1)

Channel Strip top row (2 knobs)

• Input Trim (CS input gain)
• Channel Fader Level / Output Gain (CS fader stage)

When SSL Strip Mode is engaged on the UF8, the Channel Fader Level parameter is what the UF8 motorised faders drive.

The Output Gain knob can be flipped to drive REAPER’s track volume fader instead of the CS Fader Level parameter — see Native actions → Surface-state toggles → UC1 Out-Gain to REAPER fader. Handy when the track has no SSL channel strip but you still want a hardware volume knob; the LED ring and readout follow the track fader while engaged. When the UC1 is focused on the Master track and there is no Channel Strip on it, the knob drives the Master fader automatically — no toggle needed (see Master track).

Bus Compressor section (7 knobs + 1 button)

• Threshold / Ratio / Attack / Release / Make-Up / Mix / SC HPF — 7 knobs across the top centre.
• Bus Comp In — single button enabling the BC section.

The BC controls drive the BC Instance on the BC anchor track — the track UC1 has currently pinned for Bus-Comp display. Encoder 2 (the Secondary encoder right of the central screen) scrolls the anchor between BC-bearing tracks.

The mechanical BC VU meter is driven from REAPER via the PreSonus standard GainReduction_dB host-side hook. Rest position = bottom of scale; the needle swings up through GR magnitude.

Central control panel (between CS and BC)

A column of buttons + the central LCD + the two encoders:

• Back / Confirm — navigate the on-screen menus (Routing / Presets / etc.). From the main screen, Back opens the EXT FUNCS menu — a hidden list of channel-strip parameters that don’t have a dedicated knob. Scroll it with the secondary encoder; push the encoder to switch from scrolling to adjusting the selected parameter. For SSL channel-strip plug-ins the list is the fixed SSL set; for user-mapped (non-SSL) channel strips it’s whatever you curate (see FX Learn pane → UC1 EXT FUNCS list).
• Routing — opens the Routing menu on the LCD.
• Presets — opens the Presets menu.
• 360° — default Open / Close Rea-Sixty Settings (bindable on its own UC1 entry so it can diverge from the UF8 360° key).
• Magnifier — no factory action; bindable.

CHANNEL encoder (left of the central LCD)

The large rotary on the central control panel. ButtonId Uc1Encoder1 in the bindings system.

• Rotation — Encoder: scroll tracks by default (step REAPER track selection ±, with UC1 focused-track and CS-domain focus following along). Rebindable in Settings → Bindings → UC1 (ROTATE tile under ENCODER 1) — Shift = Encoder: cycle plug-in instance by default; Cmd / Ctrl free.
• Push — push event arrives as button 0x0D; default binding empty.
• When Settings → Modes → FX / Cycle → “UC1 Encoder 1 (CHANNEL)” is ticked AND a cycle-kind Selection Mode is engaged, rotation steps the active Selection-Mode cycle instead, regardless of the binding.

Secondary encoder (right of the central LCD)

ButtonId Uc1Encoder2 in the bindings system; SSL calls it the “Secondary” or “BC” encoder.

• Rotation — Encoder: scroll BC anchor track by default (scroll the BC anchor between BC-bearing tracks). Rebindable, including to Encoder: cycle plug-in instance or Encoder: cycle FX (all on focused track).
• Push — Plug-in: toggle focused GUI by default (toggle floating window of the cursor instance from the most recent cycle). Rebindable.
• Cycle-Control mask includes “UC1 Encoder 2 (BC)” — same SEL-Mode override mechanism as above when ticked + a cycle-kind Selection Mode active.

Central LCD zones

Three addressable zones:

• Channel-Strip readout (zone 0x03) — last-touched CS parameter name + value, e.g. “HF Gain +3.0 dB”. Fades after a few seconds.
• Bus-Comp readout (zone 0x05) — last-touched BC parameter name + value.
• Central main (zone 0x0F) — multi-overlay area. Shows: track-name header + focused Instance variant (default), or the prev / curr / next Instance-carousel triple (after an Instance / FX Cycle just fired), or the BC compressor mode / status, or the Nav-Mode markers/regions carousel. Overlays are mutually exclusive; the most recent claim wins.

Brightness

Set independently per channel (UC1 LEDs / UC1 LCDs / UF8 LEDs / UF8 LCDs) under Settings → Devices → Brightness. Six Brightness … actions (LEDs +/-, LCDs +/-, Both +/-) drive these from a hardware button.

UC1 GR Calibration

Devices → UC1 GR calibration — a correction offset per printed tick, for the BC VU motor and the CS Dynamics GR LEDs.

If the UC1’s mechanical VU meter or the CS Dynamics GR LEDs drift from their printed scale, a per-tick offset table at the very bottom of Settings → Devices corrects each printed dB tick individually. The workflow mirrors SSL 360°‘s own BC VU calibration tool — click Test next to a tick, then + / - until the UC1 lines up with the printed marking. Auto-saved per-tick. Stop test resumes normal GR.

UF1 hardware

Every UF1 control is a binding target — the schematic in Settings doubles as the picker.

One channel, a colour screen and a jog wheel. The UF1 is not a small UF8: its screen is host-driven, so what the keys do depends on which view is up, and almost every key is rebindable in Settings → Bindings → UF1.

Two keys are deliberately not rebindable: MODE and SCRUB. Both are held modifiers that open a picker, so a binding on them would have nothing to fire. Both are greyed out in the schematic, and hovering one says what it does instead. SOLO and CUT are also fixed — they act on the focused track through REAPER’s own solo/mute, and Rea-Sixty does not reinvent those. SEL is a hybrid: a single press always selects the focused track exclusively (hold Shift to extend the selection instead), and the key also runs through the binding system, so a double-press or a modifier gesture can fire an action on top.

Views

MODE is a hold: keep it down and the four display soft-keys become a view picker. Press one while holding to switch, release to close.

Soft-key while MODE is held	View
SK1	Plugin — the channel strip: EQ graph, section soft-keys, four V-Pots
SK2	DAW — the same channel layout, but the four soft-keys fire your own soft-key bank
SK3	Meter — the metering screens
SK4	Sends — the channel layout showing the send group

While MODE is held the CHANNEL encoder does a second job: it steps the Encoder Mode through the ring you configured, and SK4’s label shows the live mode name as you turn. So one held key gives you both pickers — soft-keys for the view, encoder for the encoder mode. Which modes appear in the ring, and in what order, is set in Settings → Bindings → UF1.

The view survives until you change it. Everything below is described per view, because the same physical key does different work in each.

The channel (all views)

These are the controls down the left of the panel, and they all address the same channel: the one the fader is moving. With the Extender on that is the bank’s 9th track rather than the selected one, so the strip and the keys beside it always agree.

Control	Function
Fader	Volume of the UF1’s channel. Touch-sensitive, drives touch automation.
V-Pot above the fader	Pan by default, or whatever the Sticky Pot is pinned to. Push clears an armed pin, resets a live pin, or — with no pin — centres Pan. In REC + RME it rides the preamp gain, and Shift + turn changes the input channel.
SOLO / CUT	Solo / mute the channel. Fixed, not rebindable. In REC + RME they fire their assigned TotalReaper actions instead, and their lamps show those states.
SEL	Select the channel exclusively; Shift + SEL extends the selection. Double-press opens the FX chain by default. In REC / REC + MON it arms the channel instead, and its lamp turns red to show the arm state.
SOFT (above the fader display)	Pin This Ch — one press puts the channel the UF1 is showing into the Focus Set and engages the pin; press again to release, and the channel stays in the set. While pinned, the background behind the key’s label lights up on the channel display. Factory default since v0.5; it shipped unbound before that. Rebindable like every other key, and an assignment you had already made is kept — the backlight follows whatever you bind, as long as that action has an on/off state.
FLIP	Swap the fader and V-Pot assignments. Factory default, rebindable. In Plugin view the fader takes the parameter of the V-Pot you last turned or pushed, so you can reach for a control on the encoder and then move it on 100 mm of travel; the V-Pot above the fader rides Volume meanwhile. A Sticky-Pot pin, SSL Strip Mode and the send faders all keep their claim on the fader, and with the Extender running FLIP stays on Pan (the fader and the screen would otherwise be looking at two different tracks).
MASTER	Put the Master bus on the channel. Factory default, rebindable.
CHANNEL encoder	Step the UF1’s channel through the track list. Shift + turn is always Instance Cycle, whatever mode is selected. Push opens the focused plug-in’s GUI. Both are factory defaults and rebindable.

Plugin view

The channel strip of the plug-in on the focused track. When the plug-in is an SSL channel strip — or a third-party plug-in you have taught through FX Learn — the EQ curve is drawn on the screen and the four V-Pots carry that page’s parameters.

Control	Function
SK1-SK4	The channel-strip section toggles for the current page (EQ In, HF Type, …). A blank slot does nothing. An engaged toggle lights its key and highlights it on screen. The highlight matters when the Bus-Comp GR meter is using the four key LEDs: the LEDs are then showing gain reduction, and the highlight is what still tells you which sections are in.
V1-V4	The current page’s four parameters.
◄ ► (page arrows)	Step the strip page.
5-8	Jump to V-Pots 5-8 of the page.
BANK ◄ ►	Step one parameter left / right.
Quick-key 1 (bottom row)	Clear every solo in the project (REAPER’s Unsolo all tracks). Factory default; rebindable. The SOLO ACTIVE indication above it lights by itself whenever anything is soloed — that part is the UF1’s own wording and is not ours to change.
Quick-key 2 (bottom row)	Toggle Fine resolution — the channel V-Pots in Channel view, the meter V-Pots in Meter view. The FINE CTRL readout next to it follows the toggle. Factory default, and rebindable — but think twice: the UF1 prints FINE CTRL 2 over that key itself, and that text is drawn by the device, so anything else you put there will be labelled wrongly by the hardware.
V-Pot push (V1-V4)	Reset that parameter to its default.

Meter view

Control	Function
SK1	Meter Screen Selector — cycles Overview → Analogue → RTA. A Meter Pro adds Loudness as a fourth screen; a plain Meter never streams that data, so it is not offered.
SK2	Reset — clears the peak hold.
SK3	Fine — finer V-Pot resolution. In the preset browser it is Navigate Back instead. Not on the Loudness screen, where SK3 is Play.
SK4	Presets — open / close the preset browser for the pinned Meter instance.
V4	In the preset browser, scroll to highlight. Push V4 loads the highlighted preset — browsing never loads on its own.
◄ ►	Page the meter V-Pots.
Quick-key 2	Toggle Fine, same as SK3.

DAW view

Identical to Plugin view except the four display soft-keys fire the current UF1 soft-key bank instead of the channel-strip sections. Banks are built in Settings → Bindings → UF1; a bank slot can also be a dynamic bank, in which case the key behaves like a UF8 FX key — plain press, +Shift, +Cmd, +Ctrl and long-press each do something different.

Each bank slot carries its own Behavior (Momentary, Toggle or Hold) alongside its label, action and LED colours, so a bank key can latch rather than fire once.

Every bank also holds two sets of keys: Plain and Shift. Hold the UF1’s SHIFT key and the four keys show their Shift set, labels and all, and fire it; release and you are back on Plain. In the editor the Modifier row above the slots picks which set you are looking at. Press SHIFT once to jump to the Shift set and press it again to come back to Plain, the same gesture the FX-Learn editor uses. Releasing never moves it, so you can edit the set you jumped to with the mouse. A set you left empty shows empty on the surface, it does not fall back to the Plain label. While the Bindings pane is open the surface follows the Modifier row rather than the key you are holding, so the four keys show and fire the set you are editing.

There is no Cmd or Ctrl set, deliberately. The surface has exactly one modifier key, so those two could only come from the computer keyboard, where they already drive the FX-Learn modifier layers.

A bank can carry a name of its own, typed in the same editor, one per set. It is what the UF1’s time display announces when you switch to that bank, unless you turn that off in Settings → Behaviour → UF1. The field is never empty: a bank with no name of its own shows the name it will announce anyway, which is what kind of dynamic bank it is or else its number, and clearing the field puts that back.

The time field is ten seven-segment cells, so it spells rather than prints, and K M V W X have no shape on seven segments — they fall back to the nearest one they do have, which is why a bank called Mix Keys arrives as MIH KEYS. The UF1 itself is the preview: while you are typing in the name field the time display shows the name, so you are reading the real cells in the real font rather than a drawing of them, and every approximation is simply there. Stop typing and the clock comes back on its own. With no UF1 attached the editor draws the ten cells under the field instead, so offline editing is not guesswork. It is also why the built-in names read EFFECTS rather than FX and an unnamed bank reads SOFT 3 rather than BANK 3.

Soft-key labels are capped at 13 characters and V-Pot labels at 11; both are abbreviated rather than truncated, so every word stays readable.

Sends / Receives view

The channel layout showing the focused track’s sends — or its receives — four at a time. The header counts the groups, so 2/3 means you are on the second block of four, and the type cell on the channel display reads SENDS or RECEIVES so the two are never confused on a track that feeds and takes from the same places.

In the send list, hardware outputs sit alongside the track sends, in the order REAPER’s own send list shows them. A receive is named after the track it comes from.

Control	Function
5-8	Page to the next block of four.
Shift + 5-8	Flip between Sends and Receives. The window jumps back to the first group, because the two lists are rarely the same length. Also available as its own action, UF1: Sends / Receives view, if you would rather put it on another key.

Control	Function
V1-V4	The level of each send in the group. An empty slot is blank and inert.
Shift + V1-V4	Pan that send instead. The readout and the bar follow the key, so what you see is what the knob is moving. Centre has the same virtual notch as every other pan.
V-Pot push	Reset that send to unity. Shift + push centres its pan instead. Both record like a move, so they land in the envelope rather than beside it.
SK1-SK4	The send mode of the send above it. Each press steps through REAPER’s three settings in the order its send window lists them: POST (post-fader, post-pan) → PRE FADER (post-FX) → PRE FX.
Shift + SK1-SK4	Mute that send. The key then reads MUTED until you unmute it, because a silenced send you cannot see is worse than one you have to look for.

The names are REAPER’s own, so the key and the send window always agree. PRE FX is the tap ahead of the track’s insert chain — the one headphone feeds and sidechains usually want.

Secondary transport row

OFF READ WRT TRIM LTCH TCH and SHIFT along the bottom, with the primary transport (◄◄ ►► ■ ► ●) below. SHIFT is the UF1’s Shift modifier, and the primary transport ships bound to REAPER’s own transport actions.

The six silk labels are not decoration: hold SHIFT and each of those keys sets the focused track’s automation mode, in the order the silk reads. That is the factory default and it is why the UF1 needs no separate AUTO mode. The key lights for the mode the track is in.

Their plain presses are mostly yours. Two are spoken for, because the device prints its own caption over them: key 1 clears every solo (the SOLO CLR caption above it, and its SOLO ACTIVE lamp lights on its own), and key 2 toggles Fine (the FINE CTRL 2 caption). CYCLE and CLICK carry repeat and metronome. Everything here is rebindable.

Extender — the UF1 as a 9th fader

Off by default. Turn it on and the UF1’s fader joins the UF8’s bank as one continuous nine-wide strip: Side Right (default) puts the UF1 at strip 9 with the UF8 on 1-8, Left puts it at strip 1 with the UF8 on 2-9. Banking moves all nine together.

The split runs down the middle of the panel. The left half joins the bank: the fader, the level meter, the small display above it, SOLO, CUT, SEL, the V-Pot above the fader and the soft-key above the channel all address the track the fader is moving, so nothing on that side can name one track and act on another. The right half stays on the selected track, the way the UC1 behaves: the colour screen, the four V-Pots, the four display soft-keys and the EQ graph. You can therefore keep working on one channel’s plug-in while the fader rides a different track in the bank.

Pressing SEL selects the track the fader is on, which brings the right half over to it as well.

MASTER outranks the Extender: engage it and both halves show the master track. Turn it off and the Extender is back as it was.

Extender and the Focus-Set pin are mutually exclusive: switching either on clears the other, and releasing the pin puts the Extender back the way you left it.

Settings → Bindings → UF1.

Pin Set — parking the UF1 on a Focus Set

Pin Set is a clutch. With it engaged, the UF1 parks on one member of the Focus Set and its CHANNEL encoder scrolls through the members — independently of the REAPER selection and of where the UF8 is banked. Let go and the UF1 goes back to following the selection.

Two settings shape it, both in Settings → Bindings → UF1:

Setting	Effect
Focus Set scope	Both (default) — the members pin the UF8’s head and the UF1 parks on them. UF1 only — the UF1 parks the set, the UF8 banks untouched. UF8 only — the members pin the UF8 head, the UF1 keeps following the selection.
UF8 sends follow the UF1 Focus Set track	On by default. The UF8’s sends of the focused track view follows the member the UF1 is parked on rather than the last-touched track, so sends automation writes to the channel the UF1 is showing. Only bites with a UF1 present and Pin Set engaged.

Nav cross and jog wheel

The five-key cross (up / left / centre / right / down) and the jog wheel belong to Jog Mode — its own chapter, next.

Jog Mode

The jog wheel does not have one job. It has an object, and the object decides what turning the wheel means. SCRUB is a hold: keep it down and turn the jog to pick the object.

Object	Jog turns
Playhead	Moves the play cursor. Step is 1 % of the visible view per count, so the feel follows your zoom.
Scrub	Audible scrub, 0.5 s per count.
Items	Moves the selected item(s). Default one quarter of a grid step per count.
Envelope	Moves the selected envelope points, same default step.
Razor	Moves the razor edit — which edge, see below.
Fades	Changes a fade length, 10 ms per count. Where there is a neighbour it is the crossfade. See Fades below.

The arrow cross selects, the jog moves. That split is the whole idea: you never have to let go of the wheel to change what you are working on.

What the cross does in each object

The cross is not one thing either — it follows the object, exactly like the wheel.

Object	← →	↑ ↓	centre
Playhead	Zoom out / in horizontally.	Zoom in / out vertically.	Zoom to fit the project.
Scrub	As Playhead.	As Playhead.	As Playhead.
Items	Select the previous / next item on the track.	Select the item on the track above / below.	Hold it and the wheel drags the selected items as one move; release drops them. Press and let go without turning and it zooms to the selected items instead, press again to come back.
Envelope	Select the previous / next point. Once the play cursor has moved, the next arrow starts from where the cursor now is rather than from the point that was selected before it moved, so nudging the playhead and reaching for an arrow lands where you are looking.	Switch envelope lane.	Toggle what the jog edits: the selected points or the playhead. No zoom here, nudging the cursor while shaping an envelope is worth more.
Razor	Aim at the left / right edge.	Aim at the top / bottom edge.	Hold it to take the whole area and drag its content. See Razor below.
Fades, aiming	Aim at the fade-in / fade-out.	Next / previous fade type.	Switch the cross over to walking the items.
Fades, walking	Select the previous / next item on the track.	Select the item on the track above / below.	Switch the cross back to aiming.

Playhead and Scrub carry the plain zoom cross, the same five REAPER zoom actions the UF8’s cursor pad uses (40111 / 40112 / 1011 / 1012 / 40295): with no editing object engaged there is nothing on screen for the cross to select, so it does what the cross on the other surface does.

In Items, SHIFT on any of the four arrows adds to the selection instead of replacing it, and in Envelope the same goes for ← → on points, so you can walk a run of items or points onto the wheel. That is not a hidden check inside the key: each of those keys carries the (add) twin of its own action in its Shift slot, where you can see it and change it. A Shift slot you leave empty falls back to the plain action, which is why the keys without one are unaffected by the modifier.

The cross keys light to show the Razor target you have aimed at.

Everything in that table is a factory default, not a fixed rule. Each cross key holds its own binding per object, so the same physical key can do six different things and you decide all six. Click a cross key in Settings → Bindings → UF1 and pick the object at the top of the editor: the picker follows the surface, and changing it there changes the wheel’s object too, so what you edit is always what you are holding. The Shift row is a binding as well, which is where the add-to-selection defaults above live; leave it empty and the key falls back to its plain action.

The ticks beside each object in that picker are the same ones on the jog wheel’s own page. An object you untick is skipped by the wheel’s picker, so its cross bindings are unreachable until you tick it back on. They are kept, not lost.

The order is yours too. On the jog wheel’s page each object has a ▲ and a ▼ beside its tick, and the picker walks that order, exactly the way the channel encoder’s own ring works. Put the two objects you live in next to each other and the wheel is one notch away from either.

Seeing the ring while you turn it

Both pickers are rings, and until now you scrolled them blind: the surface named the object you were on and said nothing about what was coming. Hold MODE or SCRUB and the on-screen banner turns into that ring instead: the live one marked, its neighbours above and below, wrapping round the ends because a ring is what it is. Let go and it disappears.

It is the same little window the mode banner uses, so it sits where you put that and takes its colours and font from the same right-click menu. Ring neighbours there decides how many you see either side. A ring short enough to fit is simply shown whole.

The spot you drag it to is where the live one stays. The ring opens upward and downward around it, so adding neighbours grows the list in both directions rather than pushing what you are looking at further down the screen.

Three modifiers stack on the jog:

• Shift — fine. Divides the step (default ÷4).
• Cmd — copy instead of move. In Fades it means move instead of resize, and wherever the wheel is on the play cursor it pulls a time selection.
• Ctrl — cross axis. In Items, that means moving track by track rather than in time; the vertical axis is discrete, so it steps one track at a time. In Fades it takes the fade curve rather than its length.

Pulling a time selection

Wherever the wheel is driving the play cursor, hold Cmd and turn: the first click drops an anchor where the cursor is and every one after it drags the other end, so a time selection grows out of the wheel. That is Playhead mode, and Envelope once its centre key has handed the wheel to the playhead, because there the wheel is on the cursor too. Scrub is not included: it moves the cursor through REAPER’s scrub engine rather than by setting it, so the anchor would not be reliable. Let Cmd go and the selection stays. Press again and a new one starts from wherever you are. Turn back onto the anchor and it collapses, which is how you clear one without reaching for anything.

The far end is the cursor, so it snaps to the grid if that is the step unit you have set, and Shift still divides the step: Shift and Cmd together pull finely.

Razor

Razor mode aims at one of five targets: the whole razor area, or its left, right, top or bottom edge. The centre key of the nav cross is a held gesture — press and hold it and the whole razor area drags its content as one continuous move; release commits. Holding it grabs the content once at the start, so the razor cannot sweep up material it is dragging across.

Every speed here is adjustable — the picker speed, the fine divisor and the step per object all live in Settings → Bindings → UF1.

Fades

The wheel changes a fade length. Which fade is decided by the edge you are aiming at and by what is next to it, and by nothing else.

Aim at the fade-in and you are on the item’s left edge, at the fade-out and you are on its right. The wheel runs the other way round on the fade-out, because the two fades are mirror images: one turn does the same thing to both ends of the item, rather than the same thing to both numbers. Moving with Cmd and bending with Ctrl are not mirrored, so time keeps running the same way whichever end you are on. If another item touches or overlaps that edge, the fade there is the crossfade with it, and the wheel dials the crossfade: the overlap grows and shrinks around the seam, both items keep their audio where it is, and two items that merely butt together become a real crossfade the moment you turn the wheel up. If there is nothing at that edge, or a gap, the wheel works the item’s own fade.

That is why there is no separate crossfade target to aim at. The only thing ever unclear about one was which neighbour, and the side you are aiming at answers it.

↑ and ↓ step the fade type. These are REAPER’s own seven, in REAPER’s own order — the same ones its Item: Set fade-in shape to type N actions set. Type 1 is linear; on a crossfade type 1 is linear equal-gain and type 2 is equal-power. Both halves of a crossfade always take the same type, which is what REAPER does too. The list wraps, so ↑ from 7 lands back on 1.

Hold Cmd and the wheel moves instead of changing anything. At a crossfade the seam travels and the crossfade keeps its length, so you can slide a cut without re-dialling it, and neither side’s audio moves. At a plain fade the item edge travels and the fade keeps its length, so it goes along.

Hold Ctrl and the wheel takes the fade curve instead of the length.

Growing stops where the material stops. A crossfade cannot be pulled longer than the recording behind the two items, and nothing is looped or stretched to fake it — the wheel simply reaches the end and stays there.

The wheel works on every selected item. With nothing selected it takes the item under the edit cursor on the selected track, so walking with SEL and reaching for the wheel needs no extra click. With neither, nothing happens.

The centre key hands the cross over to walking the items and back, the same way Envelope’s centre switches what the wheel edits. Walking, the four arrows do exactly what they do in Items, SHIFT included, so a whole track’s fades are one gesture: walk, aim, turn, walk on.

The view follows

Fades is the one object where the wheel works at a scale you cannot see from across the room, so the arrange view comes along: whenever you change what you are on — the other edge, another item, a track above or below — the view frames that fade, with the fade taking up about a third of the width so you keep your bearings. Walking to another track scrolls it into view as well. Turning the wheel does not re-frame; the picture only moves again when a growing fade would otherwise run out of it, so dialling a length stays still to look at.

There is a floor on how close it goes, because a 5 ms crossfade blown up to fill a third of the screen tells you nothing about where you are. Half a second by default, and it is a number you can set.

When you leave the object, or switch the following off, the view you came from is put back.

This is on out of the box. Turn it off in Settings → Bindings → UF1, on the jog wheel’s own page, or put Fades: follow the fade with the view on a key.

Settings window

The manual you are reading, rendered inside the extension under Settings → Manual.

The Settings window is a dockable ReaImGui context. Open with the 360° key (default), the Open / Close Rea-Sixty Settings action, or REAPER’s Action Rea-Sixty: Toggle Settings window.

Twelve sidebar tabs: Devices · Appearance · Behaviour · Bindings · Modes · FX Learn · Favourites · Selection Sets · Parameter Groups · Exchange · Manual · About.

The first three hold the general settings, split by what they touch: Devices is the hardware itself, Appearance is what you look at, Behaviour is what the surface does.

Search settings

The rail search — every setting in every pane is indexed by its own label, and each hit names the pane it lives in, so "rme" lands on Modes → REC.

A filter field sits at the top of the sidebar, above the tab list. Leave it empty and the sidebar is the normal tab list. Type into it and the tab list is replaced by matching settings, each row reading Pane › Section › Setting.

• Matching is additive and case-insensitive — the query is split on spaces and a setting has to contain every word, in any order. “notch hold” and “hold notch” both find Notch hold.
• Words are matched against the whole trail, not just the setting’s name, so “devices meter” lists everything in Devices → Metering.
• Click a result to switch to its pane; the pane scrolls to the section that setting sits in.
• The sidebar is narrow, so long rows are shortened — the full trail when it fits, otherwise pane + setting, otherwise the setting alone. Hover a row to read the untruncated trail as a tooltip.
• Nothing matches → No matches.

Devices, Appearance and Behaviour are indexed setting by setting. The other nine tabs are indexed by name only — searching “bindings” jumps to the Bindings pane, but the individual controls inside it are not in the index. The query is not remembered between sessions.

Devices pane

Devices pane — the connected surfaces, LED and LCD brightness, metering and the V-Pot feel. Serial numbers redacted.

The hardware: what is plugged in, how bright it is, how its meters fall, how its pots feel.

Connected devices

One line per device — UF8, UC1, UF1 — reading [connected] or [not connected], plus SN and the serial number when connected.

UF8 and UC1 each get an Identify button while connected: it flashes that unit’s LEDs and displays between Dark and Full at 4 Hz for two seconds, so you can tell which box is which in a multi-unit rig. The UF1 has no Identify button.

Rea-Sixty remembers which surfaces have been attached to this computer, and hides the settings for the ones that never have. With only a UF1 on the desk you do not see UC1 GR calibration, UF8 V-Pot feel, or the UF8 and UC1 halves of the REC block. The search box hides them too, so a search cannot land you on a control the page does not draw.

It remembers rather than checks: unplugging a surface for an afternoon leaves all of its settings where they were.

• Show settings for devices you don’t have brings everything back. It appears only while something is hidden.
• Forget devices that aren’t connected shrinks the list to whatever is plugged in right now. Use it when a surface leaves the studio for good. It appears only while the list holds something absent.

If no surface has ever been attached, everything is shown.

Brightness

Two 5-step sliders (Dark / Dim / Half / Bright / Full):

• LEDs — drives buttons + V-Pot rings + UC1 LEDs
• LCDs — drives the UF8 LCD strips + UC1 LCD + UC1 status displays

Set independently so you can crank the displays while keeping the LED ring dim, or vice versa. Six Brightness … actions (LEDs +/-, LCDs +/-, Both +/-) drive these from any button binding.

Metering

Where the gain-reduction meters get their numbers:

Control	Effect
GR meter source (combo)	Only Show Channel Strip GR — the GR meters are limited to SSL CS / mapped CS plug-ins. Show any GR Data (default) — falls back to any FX on the focused track exposing the PreSonus GainReduction_dB host extension (ReaComp, FabFilter, etc.).
Combine GR across plug-ins (UF8 strips)	With Show any GR Data selected, the UF8 CS-GR strip sums the gain reduction of every compressor on the channel instead of showing one source — in-series GR adds in dB, so the meter reads the channel’s total reduction. No effect while Only Show Channel Strip GR is selected. Off by default.
Combine GR across plug-ins (UC1 Comp)	The same, for the UC1’s Comp meter. Separate from the UF8 setting, so one surface can show the combined figure while the other shows the Channel Strip alone. Off by default.

All level meters (UC1 Input + Output, UF8 strip bars) are peak-hold. The only adjustment is how fast each meter falls back after a peak, set per meter in dB per second:

Control	Effect
UC1 Input	Fall rate of the UC1’s input-level meter.
UC1 Output	Fall rate of the UC1’s output-level meter.
UF8 Strips	Fall rate of the UF8 strip-bar level meters.
Copy Input to Output	Sets the UC1 Output fall rate to match UC1 Input.

Default is 26.5 dB/s — REAPER’s own meter decay, so the UC1 input meter falls in lock-step with the output. Lower = slower decay (longer peak hold); higher = snappier. Entries are clamped to 1 – 200 dB/s.

V-Pot / encoder feel

Toggle	Effect
Shift activates Fine mode (V-Pots / encoders, not faders)	When on, holding the Shift modifier (keyboard Shift, UF8 FINE key, or UC1 Fine button) drops V-Pot + encoder step size by the configurable Fine factor (default ×0.25 — see below) for momentary fine resolution. Faders are deliberately excluded (they already have Alt-drag for fine control). Stacks with the UC1 Fine toggle. Off by default.
Fine mode steps JSFX sliders by their native increment	Some JSFX sliders are long enough that even Fine mode cannot resolve a single value cleanly. With this on, Fine on a continuous JSFX slider steps by the slider’s own native increment — one detent = one step, a fast flick accelerates — which is the finest the plug-in supports. Continuous JSFX + Fine only; VST3 / AU and normal turns are unaffected. On by default.

Below the two toggles, per-surface speed and 0 dB / centre-pan detent feel for all V-Pots and pots. Each field is a typeable value box (no slider). Faders are unaffected. Live — changes apply immediately, no reload.

Field	Default	Effect
UF8 V-Pot speed	1.00×	Linear multiplier on every UF8 V-Pot rotation delta. Higher = faster / coarser, lower = slower / finer. 1.00× = the historic feel.
UF8 Fine factor	0.25×	How much the UF8 step shrinks while Fine is engaged (Shift / FINE / UC1 Fine). Lower = finer.
UC1 encoder speed	1.00×	Same as UF8 V-Pot speed, for the UC1 knobs / encoders. Independent so the two surfaces can be tuned separately.
UC1 Fine factor	0.25×	UC1 equivalent of the UF8 Fine factor.
UF1 V-Pot speed	1.00×	The UF1’s four channel V-Pots and the V-Pot above the fader — whatever that one is driving (pan, a Sticky-Pot parameter, volume under FLIP, the 9th send’s pan as an Extender). Its own value since v0.5 — before that the UF1 borrowed the UF8’s, so tuning the UF8 silently retuned the UF1. On upgrade it is seeded from whatever your UF8 was set to, so nothing moves until you change it.
UF1 Fine factor	0.25×	How much the UF1 step shrinks while its Fine is on. The UF1’s Fine is Quick-Key 2, the bottom 2 key — not the Shift / FINE the other two surfaces use.

Effective step = base × per-control sensitivity (FX-Learn) × surface speed × (Fine factor while Fine held).

The speed minimum is 0.01× (UF8 and UC1) — low enough for crawling through long sweeps a single detent at a time. Fine factors accept 0.05× – 0.50×.

The same section also tunes the virtual notch — the SSL-style magnet that lands bipolar V-Pot params (EQ gains, trims, fader level, pan) on their neutral point (0 dB / centre):

Field	Default	Effect
Virtual notch zone	2.0 %	Catch band half-width around the neutral point (% of the param’s full range). Any inward move that lands inside snaps to centre; turning away from centre stays free. 0 % = no slow-approach snap (crossing the centre still snaps). Range 0 – 5 %.
Notch fine step	0.50×	Step multiplier applied while the value sits within 2× the zone of centre — finer moves around 0 dB plus a more reliable catch. 1.00× = off.
Notch hold	1.0 %	Soft-detent: once the value snaps to 0 dB it parks there and absorbs this much rotation before releasing — stops an endless encoder sailing past 0. 0 % = off (pure magnet, can overshoot). A mouse / automation move larger than the zone releases the hold. Range 0 – 10 %.

Applies identically to UF8 V-Pots and UC1 knobs. Unipolar params (frequency, Q, threshold) have no neutral point and get no notch.

UC1 GR calibration

Per-tick offset editor at the bottom of the pane, in two tables — BC VU meter (0/4/8/12/16/20 dB) for the mechanical VU, CS DYN GR LEDs (3/6/10/14/20 dB) for the Dynamics LEDs. Click Test on a row, then nudge that row’s dB box until the UC1 lines up with its printed marking. Auto-saved per tick. Reset all clears one table, Stop test resumes normal GR. See chapter UC1 hardware → UC1 GR Calibration.

Appearance pane

Appearance pane — the on-screen companions and their colours, the surface display options, then theme, font size and spelling.

On-screen

The optional helpers Rea-Sixty draws over REAPER’s own windows. Each is rendered by a companion script that auto-installs and auto-starts, and a status line under the toggle reports whether that companion is up yet. Full behaviour in chapter On-screen display.

Toggle	Effect
Show MCP Inserts overlay	Highlights the active Channel Strip and Bus Comp plug-in on REAPER’s Mixer Inserts list.
Show focused-track panel	The frameless floating panel showing the surface-focused track, its CS / BC plug-ins, and the last-touched parameter per domain.
Show mode-change banner	Flashes the new Selection- / Channel-Encoder Mode on screen for ~2 s, then hides. Off by default.

The colour and geometry rows appear only while the helper that uses them is switched on:

Control	Shown while	Effect
CS colour	Overlay or panel on	Colour of the active Channel Strip marking. Default yellow. Shared by overlay and panel.
BC colour	Overlay or panel on	Colour of the active Bus Comp marking. Default red. Shared by overlay and panel.
Selected FX colour	Overlay on	Colour of the surface-focused plug-in that is neither CS nor BC. MCP overlay only. Default blue.
Fill opacity	Overlay on	0.00 (default) = outline only … 1.00 = solid fill.
Border opacity	Overlay on	Opacity of the box outline. Default 0.90.
Inserts row height	Overlay on	8 – 48 px, default 17. Match it to your theme’s FX-list row height.
Inserts top offset	Overlay on	-20 – 40 px, default 1. Nudges the first row up or down until the boxes line up.

Surface display

Control	Effect
SEL LED follows REAPER track colour	The SEL LED renders the track’s REAPER colour instead of monochrome. Off → SEL is white when selected. On by default. Applies to the UF8’s eight strips and to the UF1’s single SEL key alike; the UF1 ignored the setting until v0.5.6.
Colour bar names the send / receive source track	In send and receive modes the colour bar’s plug-in name is blanked — the strip is a route, not a plug-in chain. Turn this on and that zone reads S:<track> (send) or R:<track> (receive): the track the route belongs to. The scribble above already names the other end, so the pair reads “this send, of that track”. The zone is twelve characters, so the name gets ten, shortened by the Long track-name handling mode; unnamed tracks read CH <n>. Off by default — with a one-channel side-mixer the source track is never in doubt.
Long track-name handling (combo)	How track names longer than the 7-char scribble-strip slot are shortened. Truncate (default) keeps the legacy first-7-chars cut (“Background Vocals” → “Backgro”). Smart abbreviate drops separators, then vowels after the first letter of each token, then collapses repeated consonants, then proportionally distributes the remaining char budget across tokens (“Background Vocals” → “BckgVcl”, “Drums Bus” → “DrmsBs”). Short all-caps tokens (DI / FX / EQ / …) survive untouched. Mode switch repaints all 8 strips immediately.

Theme

Three-way radio:

• Vanilla (default) — ReaImGui’s built-in dark theme, no overlay.
• Dark — Rea-Sixty’s themed dark palette (blue-grey base + soft accents).
• Light — the Light counterpart for users on a light-mode REAPER setup.

Re-themes every Settings panel + the FX Learn schematic. Hardware-face colours (UF8 silk-screen mockups, UC1 schematic) stay constant.

Font Size

Three-way radio: Small / Normal / Large. Drives every Settings widget except the UF8 / UC1 mockup schematic labels — those stay locked at 12 px so the schematics don’t reflow when the picker changes. Numeric inputs (GR-cal table, FX Learn binding column) scale with the font picker so layouts stay aligned across sizes.

Spelling

Two-way radio: British (Colour, Grey) / American (Color, Gray). Switches the spelling of every user-facing string that differs between the two (Settings labels, the focused-track panel’s right-click menu, etc.). British is the default.

Settings window

• Reopen on last tab viewed — when on, the Settings window reopens on whichever pane you last had open instead of the default. Persisted globally.

Behaviour pane

Behaviour pane — tracks, master track, plug-ins, soft-keys and the keyboard modifiers.

Tracks

Toggle	Effect
TCP follows UF8 selection	UF8-triggered track selection scrolls REAPER’s arrange-view track panel (action 40913). MCP follow is always on. Off by default.
Surface mirrors: TCP / MCP (radio)	Which of REAPER’s two views the surface’s track list mirrors. TCP (default) — the surface shows what the arrange view’s track panel shows, so a track hidden in the TCP drops off the surface, and so do the children of a fully-collapsed folder whenever REAPER’s own Hide children of collapsed folders preference is on. MCP — the surface follows the Mixer instead, hiding whatever the Mixer hides. Also available as the bindable Surface mirrors: TCP and Surface mirrors: MCP actions.
Pinned tracks survive banking	On by default. Pinned tracks — Focus-Set members, plus REAPER’s own TCP pins while Surface mirrors is TCP — sit on the leftmost strips and stay there while everything else banks past them. Switches itself off when the pinned head would fill every usable strip, since there would be nothing left to bank. MCP has no pin concept, so the setting is inert in MCP mode.
Touch selects channel	Touching a UF8 fader exclusively selects that strip’s track. Off by default.
Track selection follows parameter change	V-Pot / CS / BC knob edits on a non-selected track auto-select that track. Off → the UC1 stays on the currently selected track no matter which strip was just edited. Off by default.
Selection mode resets to Normal on startup	The active Selection Mode is remembered while you work, but comes back as NORM after a REAPER restart. On by default: a session that reopens with REC still engaged has its SEL keys arming tracks before you notice. Off → the mode is restored as it was.

Master track

Surface-side handling of the REAPER Master bus. See Master track (own chapter) for the full behaviour.

Control	Effect
Show Master as Track 0 on UC1	The UC1 CHANNEL encoder can scroll left past track 1 onto the Master as a virtual “track 0”. UC1-only — the Master never appears on the UF8 strips through this toggle. Default off.
Pinned Master (combo)	How the Pin Master to UF8 Strip 1 / 8 actions lay the strip out. Replace strip (default) — the pinned strip becomes the Master and hides whatever track was banked there. Shift banking — the regular tracks bank over the remaining 7 strips so none is hidden (the bank step + clamp drop to 7 while a pin is live).

Plug-ins

Toggle	Effect
Don’t show offline FX	Cycle rings (FX Cycle, Instance Cycle, per-strip variants) and the UF8 colour-bar default cursor skip FX slots that are set offline. Offline-only tracks show a -. Off by default.
Wrap Plug-in Cycle	Default on (legacy behaviour) — cycle rings wrap from last FX back to first. When off, both ends of the FX chain hard-stop on every cycle path (Channel-Encoder FX/Instance Cycle, per-strip V-Pot FX/Instance Cycle), and the UC1 carousel shows no neighbour name past the first/last FX.
SSL Strip Mode follows focused plug-in window	When REAPER’s last-focused FX is a CS Instance, SSL Strip Mode auto-engages. Off by default.
Plug-in GUI follows active Instance	When an Instance Cycle / FX Cycle lands on a new target, an already-open floating plug-in GUI re-points to the new target. Off → the cycle moves the surface but leaves the window pinned to its current FX. On by default.
UF1 PLUG-IN key opens the plug-in GUI	Whether the UF1’s PLUG-IN soft-key on a native SSL strip page opens the plug-in’s GUI as well as claiming the surface. Off by default (surface only). An explicit UF1 map picks this per key instead (FX Learn → UF1 cell → Action); the built-in strip pages have no per-key storage, so they follow this one setting.
Auto-engage UF8 Plug-in Mode for UF8-mapped plug-ins	When SEL-Mode cycle V-Pot push OR a Plug-in: toggle focused GUI binding lands on a UF8-mapped plug-in, also engage UF8 Plug-in Mode with GUI. Off by default.
Pin plug-in GUI position	Every plug-in window Rea-Sixty subsequently opens snaps to a fixed position (size is left alone). Drag a window where you want it and click Capture current, or click Center on Screen for the middle of the display. The line above the buttons reads back the captured pin, or (none captured yet) — until something is captured the toggle does nothing.
Pin FX-chain GUI position	The same pattern for FX-chain windows, with its own captured position. Title matching looks for “FX:” on macOS.

Soft-keys

Control	Effect
Parameter change switches soft-key bank	On by default. A focused-parameter change switches the SSL soft-key bank to whichever bank holds that parameter. Off → the bank stays put when you touch a parameter. The UF8 parameter display follows the parameter either way.
Engage a fixed soft-key bank at startup	Off by default. Ticking it reveals three combos — Layer (1-3), Quick (Q1-Q3), Sub-bank (V-POT / Soft 1-5) — and that user-Quick is engaged once on the first timer tick of every fresh REAPER session, instead of the plug-in-driven default. Use current hardware bank fills the three combos from whatever is engaged on the UF8 right now. Layer 1’s Q1 / Q2 are greyed out: they are the hardcoded SSL CS / BC focus and carry no user-Quick slots. Ignored while UF8 Plug-in Mode is on — that mode owns the soft-keys.

UF1

Control	Effect
Announce the soft-key bank on the time display	On by default. Switching the UF1’s soft-key bank flashes the bank’s name across the ten-cell time field for about a second, the same way a format change flashes BARS / TIME / SAMPLES, and the clock comes back by itself. Holding SHIFT counts as a switch, because a modifier set is a bank of its own; if that set simply takes Plain’s bank its name is the same one, and nothing flashes. A bank you named in Settings → Bindings → UF1 shows that name; a dynamic bank shows what kind it is (EFFECTS, GROUPS, COLOURS, FAVS); an unnamed static bank shows its number (SOFT 3).
Start the UF1 in a fixed view	Off by default, and the UF1 comes back up in the view you last left it in. Ticking it pins whichever view the UF1 is showing at that moment instead; the combo below changes it to Plug-in, DAW, Meter or Sends. Either way the view is applied once, on the first timer tick that sees the UF1, so plugging the device in mid-session engages it too. The last-used view is remembered globally, not per project: which view the surface shows belongs to the surface, not to the session you happen to open.

Keyboard

Toggle	Effect
Alt/Option + fader drag → snap back to original on release	Hold Alt/Option while moving a fader; release while still holding Alt → fader snaps back to its touch-on value. Mirrors REAPER’s mouse Alt-drag. Off by default.
Keyboard Shift acts as Shift modifier	When on (the default), holding Shift on the host keyboard counts as the Shift modifier for any binding’s Plain/Shift/Cmd/Ctrl modifier slot — in addition to the hardware Modifier: … bindings.
Keyboard Cmd (⌘) acts as Cmd modifier	Same, for Cmd on macOS. On by default.
Keyboard Ctrl acts as Ctrl modifier	Same, for Ctrl on Windows / Linux. On by default.

The three FX-Learn modifier-layer switches used to sit here. They now live in FX Learn → Modifier layers.

Bindings pane

Bindings pane, UF8 — the surface mockup doubles as the picker; short press and long press are edited separately.

Bindings pane, UC1 — encoder rotate and push are distinct binding targets.

Bindings pane, UF1 — soft-keys, four V-Pots, the channel encoder, the nav cross and the jog wheel.

Top of the pane: a tab bar with UF8, UC1 and UF1, each rendering its hardware as a vector schematic. Click any button, knob, encoder, or fader to select it; the per-button editor opens below the schematic.

The “current layer” follows whichever Layer button (1 / 2 / 3) is highlighted in the schematic — click a Layer button to switch the live layer; the green outline indicates which one is active. There is no separate layer-tab strip.

Five click-to-edit special cases:

• Top-soft-keys (the 8 buttons above the V-Pots) open the user-Quick slot editor for the (Layer, Quick, Sub-Bank) coordinate you are editing instead of the regular per-button editor — top-soft-keys are slot pickers, not direct actions.
• Sub-bank selectors (V-POT + 1..5) open the sub-bank cell editor with a Per-Quick LED override so the user can distinguish (Layer, Quick) contexts visually.
• The UF1 nav cross (the four arrows and the centre key around the jog wheel) opens the regular editor with a Jog Mode picker above it. Each of those five keys holds a separate binding per object, and the picker says which one you are editing. It follows the surface and moves it: change the object there and the wheel changes with it, so what you edit is always what you are holding. See the chapter Jog Mode.
• The UF1 jog wheel is selectable but fires nothing, so clicking it opens the wheel’s own settings (picker speed, fine divisor, the step for the object you are in, and its time axis) with no action picker at all. Only the settings the live object actually uses are shown.
• Everything else uses the regular per-button binding editor.

Offline soft-key editing + edit selector

You can view and edit the Top-Soft-Key slots without a UF8 connected. The engaged bank is a value Rea-Sixty holds either way, so clicking a Quick or Sub-Bank still moves it and the editor still follows.

When you click a Top-Soft-Key (or a Sub-Bank cell) in the schematic, a Quick (Q1 / Q2 / Q3) and Sub-bank (V-POT / Soft 1-5) selector appears. It is not a second setting beside the hardware: it shows the bank that is engaged, and clicking one engages another, exactly as pressing that key would. What you edit is always what the surface is on.

Each slot carries a Behavior (Momentary, Toggle or Hold), the same setting a regular button has.

Every Sub-Bank also holds two sets of keys: Plain and Shift. Holding the FINE key switches the whole row of eight, labels and all, and releasing returns to Plain. The Modifier row next to the Quick and Sub-Bank pickers chooses which set you are editing, and the scribble previews follow it. Like those two pickers it follows the hardware: press FINE to jump to the Shift set and press it again to come back to Plain. Releasing never moves it, so you can edit with the mouse. A set you left empty shows empty on the hardware, it does not borrow the Plain label. While the Bindings pane is open the surface follows the Modifier row rather than the key you are holding: the eight keys show the set you are editing and a press fires that set, so what you see on the hardware is what you are working on. Close the pane or switch to another one and the surface goes back to following the held key.

There is no Cmd or Ctrl set. The surface carries one modifier key and no more, so those two would have to come from the computer keyboard, where they already belong to the FX-Learn modifier layers.

Each set is a full bank, not just a second list of actions: its own actions, its own labels, its own LED colours and its own presets. Saving a preset captures the set you are on; recalling one lands on the set you are on, so a preset captured on Plain can be recalled into Shift.

Each set can be its own dynamic bank. Pick a kind with the Modifier row on Plain and Plain’s bank becomes dynamic; pick one on Shift and that set becomes a bank of its own, so FX on Plain and Track Colours on Shift is a thing you can build. A set left on Off (take Plain’s bank) does exactly that, which is how a set behaves out of the box.

When a bank is dynamic its keys come from the focused track. On Plain’s bank the modifiers still run the FX-key gestures, except on a key you assigned in that set, which fires instead, so nothing you were already using goes away. A set with a bank of its own carries no gestures: holding the modifier is how you reached that bank, so pressing a key there is that bank’s own push. A long press is still a long press either way.

Clear whole key does what it says: label, behaviour, LED and both sets. To empty a single set, pick None (disabled) in its action picker.

What you edit is what is engaged. Clicking a Quick or Sub-Bank tile in the schematic engages that bank, and the editor follows it, so the pane can never sit on a different bank than the surface. A green ring marks the engaged Quick / Sub-Bank.

This works with no UF8 attached, so you can still walk through every Quick / Sub-Bank page offline — the Top-Soft-Key labels in the schematic show the bank you just engaged.

Factory Rea-Sixty soft-key banks

In the Sub-Bank editor there is a Rea-Sixty factory banks section. Pick a curated bank from the combo and Recall into this Sub-Bank, or Load full set → Layer 1 / Quick 3 to drop all banks into Layer 1 / Quick 3’s six sub-banks at once.

The seven factory banks are:

• Encoder Modes — Channel-Encoder mode switches (Ch Select / Instance / FX Cycle / FX Move / CS Cycle / Markers / Nudge / Focus Wheel).
• Focus Set & Selsets — pin / add / remove / toggle / set-from-selection / pin-focused / clear, plus Cycle Sets.
• Plug-in Ops — FX GUI / FX Chain / Close All FX / Bypass / Offline / Preset prev-next / SSL Strip.
• Learn / Master — Learn-HUD / Quick Learn (project + track) / Touch-Learn / Master pin left-right / focused-track panel / Out-Gain.
• CS Favourites — the eight Switch to CS Favourite N actions; the labels show each favourite’s plug-in short name live (falling back to “CS Fav N” when a slot is empty).
• BC Favourites — the same for the eight Bus-Compressor favourites.
• Brightness — Both / LCDs / LEDs × up / down.

These are built only from Rea-Sixty’s own actions; generic DAW actions (deselect, arm, zoom, etc.) you bind yourself to a free slot.

Dynamic sub-banks

A normal Sub-Bank holds eight fixed assignments. A dynamic Sub-Bank computes its eight keys live from whatever track you are looking at — its plug-ins, for instance — so the keys change as you move around the session.

Open a Sub-Bank cell in the UF8 schematic and look for the Dynamic bank section. The dropdown offers:

Setting	What the eight keys become
Off (static slots)	Normal behaviour — the eight slots you assigned
FX (focused track, paged)	The focused track’s plug-ins
Parameter Groups	Parameter Groups 1–8
Track Colours	Your eight-colour palette
CS / BC Favourites	Your eight Channel Strip or Bus Compressor favourites

The choice is stored per Sub-Bank, so each of the six Sub-Banks under each Quick can be dynamic or static independently. While a bank is dynamic its eight stored slots are ignored — they are not lost, and turning the bank back to Off restores them.

A dynamic Sub-Bank announces itself in three places, so you never edit slots that cannot fire:

• The Sub-Bank cell in the schematic carries an amber tick in its top-right corner.
• The eight scribble strips above it read the bank’s kind (FX, GROUPS, COLOURS, FAVS) rather than the stored slot labels, because those labels never reach the hardware while the bank is dynamic.
• Clicking any of the eight keys shows what the bank computes instead of a slot editor, with the same Dynamic bank dropdown, so you can switch it back to static without hunting for the cell.

Layer 1’s Q1 and Q2 are driven by the plug-in and carry no user slots, so they cannot be made dynamic. Everything else can: Layer 1 Q3, and all three Quicks on Layers 2 and 3.

The UF1’s ten soft-key banks take the same setting, in Settings → Bindings → UF1. There a whole bank is dynamic rather than a Sub-Bank, its four keys show four items at a time, and a long press on the UF1’s ◄ ► keys pages through them. A long press on a dynamic key itself fires half a second after you press it, under the finger, the same as every other long press on the surface. (5-8 is always the DAW channel group, never the bank.) The FX-key gestures are global, so the five you set on either surface drive both.

The UF1’s banks work the same way, set for set: a set can take Plain’s bank or carry one of its own, and while it takes Plain’s, the four slot editors stay reachable because that is where you put the key that beats the gesture. On the UF8, dynamic banks are inactive while UF8 Plug-in Mode is engaged.

Track colours and Parameter Groups apply to every selected track, not just the focused one, so you can colour or group a whole selection with one press. The FX bank always acts on the focused track alone.

The Favourites bank

The eight keys are your eight favourites — Channel Strip or Bus Compressor, whichever class you last worked on. Rea-Sixty decides that the same way every other favourite action does: from the parameter you last touched, falling back to the class the soft-key row is showing. So the bank follows you between the two rather than making you pick one.

Each key wears its class colour from Appearance, the same yellow and red the inserts overlay and the FX bank use, so you can see at a glance which of the two you are looking at. The key of the favourite currently on the track is bright, the other assigned ones are dim, and a favourite you have not filled in stays dark and does nothing.

A press switches the track to that favourite. Whether it carries your current settings across or recalls what that favourite last had is not a property of the bank: it is the per-class setting under Favourites, which drives every favourite action alike. Channel Strips default to carrying the settings, Bus Compressors to recalling their own.

If the track has no strip at all, the press inserts the favourite at the end of the track’s FX chain. It arrives on the plug-in’s own settings, because there is nothing to carry across.

The FX bank

Each key takes one plug-in from the focused track’s chain, labelled with its name — the format prefix (VST3:, JS:) and the trailing vendor suffix are stripped so the name fits.

The LEDs read at a glance:

LED	Meaning
Bright	The focused plug-in — the one the surface is following
Dim	Present and running
Dark	Bypassed, offline, or no plug-in in that position

A track you have not touched yet shows its first plug-in bright, because that is where the surface’s plug-in cursor starts.

Populated keys take their colour from the colour stored on the underlying static slot, so if you want your FX keys a particular colour, set it on the slots underneath.

Paging. A track can hold more than eight plug-ins. The Page with dropdown chooses what pages the bank:

Setting	Control
(no paging — stays on 1-8)	Default — the bank shows the first eight only
UF8 encoder	The UF8 Channel encoder
UC1 Encoder 1 / UC1 Encoder 2	Either UC1 encoder
UF8 Bank ◄ ►	The UF8 bank keys

Note the default: out of the box an FX bank does not page, so a track with twelve plug-ins shows only the first eight until you pick a paging control. The chosen control only pages while this Sub-Bank is the engaged one; the rest of the time it does its normal job. Paging returns to the first page whenever the focused track changes.

What a key press does is configurable per gesture, and the setting is global — it applies to every FX bank you create, not to one bank:

Gesture	Default
Push	Focus FX (surface follows)
+Shift	Float/close FX window
+Cmd	Bypass toggle
+Ctrl	FX solo (bypass others)
Long-press	Offline toggle

The full set also includes Delete FX, Move FX up and Move FX down.

A long press is half a second and fires when you let go. Long-press replaces the modifier rather than combining with it — Shift plus a long press runs the Long-press action, not the +Shift one.

Delete FX removes the plug-in immediately, with no confirmation. Think before you put it on Push.

Focus FX moves the surface onto that plug-in and re-points an already-open plug-in window at it. It does not open a window that was closed — use Float for that.

FX solo bypasses every other plug-in on the track and remembers what was on; pressing the same key again, or soloing another plug-in, puts them all back.

Parameter Groups and Track Colours

For these two the FX gesture table does not apply. Only short versus long press matters, and modifiers make no difference.

Parameter Groups — the eight keys are the eight groups, labelled with your group names (falling back to Grp 1…Grp 8). A key is bright when the focused track belongs to that group. A short press toggles membership across every selected track; a long press toggles whether the group is broadcasting at all. Group names are edited in the separate Parameter Groups Settings section, not here. Membership is stored in the project; group names and their on/off state are global.

Track Colours — each key glows its own palette colour, brightening when the focused track wears it, and wears the name of the colour it shows: RED, ORANGE, YELLOW, GREEN, CYAN, BLUE, PURPLE, MAGENTA, PINK, WHITE. Those are the words SSL 360° itself uses for the same ten colours, so a key and the hardware always agree. A colour you mixed yourself is none of the ten and has no name to wear, so that key reads Col 1…Col 8 instead; a name you typed into the slot beats both. A short press paints every selected track; a long press clears the custom colour instead. The palette itself is edited right below the dropdown as eight swatches, and is global.

If you had named these keys before the palette moved to the hardware colours, those names described the colours the slots used to carry. They are corrected once, on load, and only where the name is still the old palette’s own word for that slot. A name you chose yourself is never touched.

If a bank stays blank

With no track focused or selected, every dynamic bank goes blank and dark and its keys do nothing — there is no context to compute from.

One historical case: Rea-Sixty briefly had a Sends dynamic bank, which was removed. A configuration saved while it existed still loads, but the bank stays permanently blank. Set it to something else, or back to Off (static slots).

Binding visibility in the schematic

Bound buttons in the UF8 schematic are tinted (a soft green face / border); empty buttons stay neutral, so you can see at a glance which controls carry a binding. Hovering a bound button shows a tooltip listing what it fires on Plain / +Shift / +Cmd / +Ctrl, any long-press action, and the behaviour (Momentary / Toggle / Hold).

Per-binding editor

For a regular button, the editor exposes:

• Action type — Native / REAPER Action / Keyboard / MIDI Command / Noop.
• Action name — text picker (auto-complete) for Native + REAPER Action.
• Modifier slot — Plain / Shift / Cmd / Ctrl. Each modifier slot is bound separately, so one physical button can carry up to 4 different bindings per layer.
• Behavior — Momentary / Toggle / Hold.
• Long-press action — separate action that fires after the long-press threshold (~500 ms) instead of the short-press action on release.
• LED appearance — colour + brightness override that replaces the action’s default state-of mapping.
• For MIDI Command bindings: channel / note number / velocity / CC value as appropriate.
• For REAPER Action bindings: a search dialog that browses REAPER’s Action List by name or command ID (also exposes ReaScript loading).
• For the five UF1 keys the screen prints a name for (the SOFT key and the four display soft-keys): a Label. Leave it empty and the label follows whatever action is bound; type your own and it stays, whatever you rebind the key to afterwards. Clearing the field hands the name back to the action. This is why the UF1’s single SOFT key stops reading PIN SET once you give it a different job. Every other UF1 key has no field, because the surface has nowhere to print it.

Right-click context menu

Right-clicking a button in the schematic opens Copy binding / Paste binding for that binding, plus Reset binding to factory default — restores just that one control’s baked-in factory binding, leaving every other binding untouched (unlike the Reset to factory defaults in the About pane, which wipes everything).

Export / Import / Reset

Bindings are bundled into the Setup export available from the About pane (single file covers bindings + plug-in maps + Settings preferences + Parameter Group slot names).

The Bindings pane itself offers Save UC1 bindings… and Load UC1 bindings… — these cover only the five UC1 controls. Loading replaces the UC1 bindings and leaves the UF8 bindings untouched.

Bindings storage paths:

• macOS: ~/Library/Application Support/REAPER/rea_sixty/bindings.json
• Windows: %APPDATA%\REAPER\rea_sixty\bindings.json
• Linux: ~/.config/REAPER/rea_sixty/bindings.json

Modes pane

Modes → AUTO — automation-arm filtering, fill direction and the selection-set auto-mode.

Modes → FX / Cycle — which controls drive the FX cycle, and what V-Pot push does.

Modes → Nudge — the playhead nudge unit and the amount per detent.

This pane configures how the Selection Modes behave when they are active. Each sub-tab corresponds to one Selection Mode (or one cycle behaviour) — switching Selection Modes on the hardware uses the modes themselves; this pane only sets their per-mode options.

Four sub-tabs: AUTO · FX / Cycle · REC · NAV.

AUTO

Setting	Effect
Show only tracks armed for automation writing (hide Trim / Read)	While AUTO Selection Mode is engaged, tracks in mode 0 (Trim) or 1 (Read) are hidden from the surface. Touch / Write / Latch / Latch-Preview tracks remain visible.
Fill from left / Fill from right (radio pair)	When fewer visible tracks than the 8 hardware strips, choose which side they collect on. Project order is preserved either way. Active only while AUTO Selection Mode is engaged.
Selection-Set Auto-Mode (combo)	None / Trim/Off / Read / Touch / Write / Latch / Latch Preview. When set, recalling a Selection Set in AUTO mode forces its member tracks into this REAPER automation mode. Deactivating the set (or leaving AUTO mode) reverts those tracks to Trim/Read (mode 0).
Focus-Set Auto-Mode (combo)	Same options, for the pinned Focus Set — own knob, decoupled from the slot Selsets. Pinning the Focus Set in AUTO mode arms its members to this mode; unpinning (or leaving AUTO) reverts to Trim/Read. None = leave members’ modes untouched.

FX / Cycle

Active only while a cycle-kind Selection Mode (FX Cycle or Instance Cycle) is on the V-Pot row. Picks which physical controls drive the cycle; the active FX opens in the chosen view (V-Pot push only).

Controls (multi-select checkboxes):

• UF8 V-Pots (per-strip cycle) — default ON
• UF8 Channel Encoder
• UC1 Encoder 1 (CHANNEL)
• UC1 Encoder 2 (BC)

V-Pots cycle per-strip (each strip’s own track). The three single encoders cycle the focused track and override their normal function while SEL Mode is engaged.

V-Pot push opens active FX as (radio pair): Floating window / FX chain.

REC

Setting	Effect
Enable RME / TotalReaper integration	Master switch. Requires the TotalReaper extension. While REC Selection Mode is active, the assignments below trigger TotalReaper actions against the strip’s track.
(presence line)	Says whether TotalReaper was detected. When it is missing, a button hands you to ReaPack with the repository selected, so it installs like any other package. TotalReaper ships from the same repository as Rea-Sixty, so if you installed through ReaPack it is already listed. Without ReaPack the button opens the project page instead.
V-Pot rotation → Preamp gain ±1 dB	Steps preamp gain instead of pan.
V-Pot rotation + Shift → Change input channel	Re-routes the strip’s track input on rotation.
V-Pot push (combo)	TotalReaper action assignment. Choices: None, Toggle 48V phantom, Toggle pad, Toggle phase invert, Toggle AutoLevel.
Cut button (combo)	Same action list.
Solo button (combo)	Same action list.

The rows above are the UF8 strips. The UC1 and the UF1 have their own set below, so each surface can be opted in separately.

Setting (UC1)	Effect
Encoder 2 rotation → Preamp gain ±1 dB	Steps preamp gain on the focused track.
Encoder 2 rotation + Shift → Change input channel	Re-routes that track’s input.
Encoder 2 push (combo)	Action assignment, same list as above.
Cut button (combo)	Same action list.
Solo button (combo)	Same action list.
Polarity button (combo)	Same action list.

Setting (UF1)	Effect
Above-fader V-Pot rotation → Preamp gain ±1 dB	Steps preamp gain on the channel the fader side is showing.
Above-fader V-Pot rotation + Shift → Change input channel	Re-routes that channel’s input.
V-Pot push (combo)	Action assignment, same list as above.
Cut button (combo)	Same action list.
Solo button (combo)	Same action list.

The UF1 has no Polarity key, so it has three assignable buttons rather than four.

NAV

The NAV sub-tab has five sections: Activation, Per-surface, UF8 strip display, Encoder push actions and Behaviour.

Activation — read-only list of which physical button currently fires each of the three Nav-mode toggle builtins:

• Nav Mode (Markers & Regions): toggle
• Nav Mode: Markers only (no drill)
• Nav Mode: Regions only (no drill)

Each line shows the bound layer + button + modifier + long-press flag, or “(unbound)”. Edit via Settings → Bindings.

Per-surface — a small table, one row per setting and one column per surface.

• Show overlay — UF8: On 8 strips. UC1: Take over LCD. The UC1 box covers Encoder 2 as well: with it off the encoder keeps its normal action (Encoder: scroll BC anchor track by default), the LCD never switches to the carousel, and only the UF8 reflects Nav Mode.
• Mode — UF8: Regions / Markers. UC1: Mirror UF8 / Regions / Markers. The UF8 picker doubles as the view you land in when Nav Mode is switched on. The two independent UC1 modes carry their own cursor, so the UC1 can walk the markers of whichever region the UF8 is sitting on while the UF8 stays in Regions. Drilling is implicit there, which costs the push actions: Drill and Back become no-ops and Jump + Drill collapses to Jump only.

UF8 strip display

• Lower-row format (radio): Off (V-Pot value) / Index (R03 / M07) / Timecode (MM:SS). Off keeps the V-Pot value visible; Index / Timecode overlay marker metadata on the lower row.
• Colour-bar source (radio): REAPER marker colour / Force palette grey. REAPER honours the colour override set on each marker / region; Force grey suppresses it.

Encoder push actions (UC1 Encoder 2 + UF8 Channel encoder) — Plain push, Shift + push and Long-press each pick any of the same 7 actions via dropdown. The three are shared between the two surfaces:

Action	Effect
Jump + Drill	In Regions view: jump transport to the region start AND enter the region’s marker list. In Markers view: jump only (drill is meaningless there).
Jump only	Move transport / edit cursor to the cursor item.
Drill only	Enter the region’s marker list (Regions view only; no-op elsewhere).
Back	Return from a drilled-into Markers-in-Region view to Regions.
Toggle View	Flip between Regions and Markers (all).
Add marker at playhead	Insert an empty marker at the playhead (or edit cursor when stopped).
Disabled	No-op.

Defaults: Plain = Jump+Drill, Shift = Drill only, Long = Back.

View-locks (Markers-only / Regions-only) suppress Drill only specifically (Jump+Drill collapses to Jump only; Drill only becomes a no-op). Every other action fires regardless of lock. Long-press threshold ~500 ms.

Behaviour

• Region press (UF8 top-soft-key) (radio): Jump + Drill / Jump only / Drill only. Jump = move transport to the region start; Drill = enter the region’s marker list. A Regions-only view lock always suppresses Drill.
• Auto-follow playhead / edit cursor (checkbox). While Nav Mode is active, the cursor strip tracks whichever marker / region the playhead is on (or the edit cursor when stopped). In Markers-in-Region view, the overlay auto-rolls into the next region when the playhead crosses out.

FX Learn pane

FX Learn pane — a bx_console SSL 4000 G snapshot laid onto the UF1, with the parameter list and the GR calibration table.

The FX Learn pane teaches third-party plug-ins to behave as virtual Channel-Strip or Bus-Comp Instances. Built-in maps (SSL CS 2 / 4K B/E/G / BC 2 / 360 Link) always win — user maps can’t shadow them.

The pane has two views:

Master view (default)

Toolbar:

• + New — opens the “new map” picker (browses your installed-FX catalog by name, lets you choose primary mode + UF8-Mode flag).
• Export… — write the full user-plug-in catalog to a JSON file.
• Import… — read a catalog JSON back in.

Below the toolbar:

• Search field (case-insensitive match against FX name or derived developer string).
• Table of user maps. Per row: display short, FX-name match, developer, domain, variant count, mapped-param count, last-edit date, Edit button, Delete button.

Editor view (entered via Edit)

The editor live-follows the active FX — open it and it loads the map + instance for the plug-in you’re currently looking at (the last-touched FX), so you don’t have to find it in the list first. Manually picking a different map / instance still sticks until you touch another plug-in.

Top bar:

• Domain picker — Channel Strip / Bus Comp / None (UF8-only). UF8-only maps the FX into the per-strip view without claiming a CS/BC slot.
• UF8 Mode checkbox (UF8-only domain) — drives Instance Cycle / Plug-in Mode.
• Primary mode picker (CS variant family) and other domain-specific options.
• CS Favourite dropdown (Channel-Strip domain only) — assign this plug-in to one of the 8 CS favourite slots, or clear it. See chapter Favourites.
• Mockup toggle — visualises the UC1 layout via a UC1 mockup PNG instead of the strip-bar schematic. Persisted in ExtState ReaSixty/fxLearnMockup.
• AutoLearn button — runs the pattern-matching engine (hardcoded SSL seeds + user-map dictionary; three-pass: exact / substring / token) against either the live FX on the focused track or the catalog’s stored param snapshot. Confidence-scored suggestions open in an AutoLearn Preview modal with a per-row checkbox + confidence %, plus All / None bulk helpers. UF8 V-Pot suggestions auto-group by category (EQ / Comp / Gate / Filter / I-O / Misc). Accept applies every checked mapping into the active map.
• Breadcrumb ← All maps to leave the editor.

Editor body — depends on the domain:

• CS / BC domain: the UC1 / strip schematic. Click a control to learn it to a plug-in parameter; the active row’s combo lists every plug-in parameter (with current value if a live instance is on the focused track).
• None (UF8-only): the UF8 strip-bar schematic. Drag a strip slot (V-Pot, top soft-key, etc.) onto a plug-in parameter.

UC1 EXT FUNCS list (CS mode)

Below the UC1 mockup, Channel Strip domain only, a 4-column grid lets you fill the UC1’s hidden EXT FUNCS menu (opened with the UC1’s Back button) with up to 10 of this plug-in’s parameters. The grid is two side-by-side groups of five rows; each row is a Name field plus a parameter dropdown.

• The Name is shown on the UC1 LCD — the carousel shows up to 11 characters, the header line shows the full name.
• Empty rows are skipped on the surface; the order on the device follows the grid (left column top-to-bottom, then right column).
• The dropdown lists this plug-in’s parameters (from the FX-Learn param snapshot); pick (none) to clear a slot.
• This applies to user-mapped (non-SSL) channel-strip plug-ins only. SSL channel strips keep their fixed built-in EXT FUNCS list and are not edited here.
• Saved per plug-in in user_plugins.json (extFuncs, schema v8).

Note: a parameter you put in EXT FUNCS that’s also on a physical V-Pot uses the plain encoder path — it doesn’t share that V-Pot’s range / curve / sensitivity. (SSL built-in EXT FUNCS slots keep full knob travel.)

Right-click context menu

Right-clicking a mapped control on the UF8 / UC1 schematic opens per-control options:

• Copy / Paste / Clear the binding.
• Fill sequential (right) on a V-Pot / Fader / Solo / Cut / Sel — propagates the source-strip’s attributes onto every strip to the right. Carried fields: faderInverted; V-Pot inverted / vpotMode / polarity / defaultNorm / stripColour / travel (range + curve + sensitivity); Solo / Cut / Sel colour; Reverse LED flag.
• Inverted [off/on] on a Fader / V-Pot — flips the rotation / direction-to-value mapping.
• Reverse LED [off/on] on a Solo / Cut / Sel button — XORs the LED on/off bit before painting. Use this for plug-ins whose Cut/Bypass param reports 1 = inactive so the LED would otherwise stay bright while the function is off. Saved per (fader-bank, strip, button) in user_plugins.json.
• V-Pot mode: Value / Toggle on a V-Pot — Value = continuous (rotate scrubs, push resets to Push reset); Toggle = binary (rotate ignored, push flips 0↔1).
• Polarity: Unipolar / Bipolar on a Value-mode V-Pot — Unipolar (default) renders the LCD ring as L→R sweep; Bipolar renders centre-out (like SSL Pan) and makes the Log / Exp curve presets mirror around 0.5. Made for Pan, EQ-gain, mid-range freq sweeps — anything where “neutral” sits in the middle.
• Knob travel (V-Pot only — see Knob travel + curve editor below) — inline Min / Max sliders + Advanced… opens the curve editor.
• Push reset slider (Value-mode V-Pot) — the value the V-Pot snaps to when pushed. On a Bipolar V-Pot, a small “0.5” quick-set button + hint appears when the slider isn’t already at centre.
• Display label (inline text field) — per-slot override for the scribble-strip name (1..12 ASCII chars; a longer stored label is trimmed, never blanked). Empty = falls back to the parameter’s default short name. Persisted as UserLinkSlot.customLabel (FX-Learn slot) or UserUf8BankSlot.label (UF8 V-Pot) / UserUf8StripBinding.faderLabel (UF8 fader) in user_plugins.json — no schema bump. Re-binding a slot to a different parameter clears its custom label (the label named the old param), so the field and the readout stay in agreement.
• Save feel to / Apply feel from / Clear preset (UC1 knobs + UF8 V-Pots only) — reusable tuning presets; see Feel presets below.

UF1 layer

A map can carry a UF1 layer of its own, next to the UC1 one. The UF1 layer tick-box turns it on and the Mockup: radio swaps the schematic between the UC1 and the UF1, so you lay parameters onto whichever surface you are editing.

Leave the UF1 layer off and the UF1 fills itself from the UC1 mapping — one map, both surfaces, nothing to maintain twice. Turn it on when the UF1 should differ, and the four buttons below the schematic manage it:

Button	Does
Fill: Replace	Fill the page from the plug-in’s parameters, discarding what is there
Fill: Append	Fill only the empty slots
Fill from UC1	Copy the UC1 layer’s assignments onto the UF1
Unbind all	Clear the page

One warning about Unbind all: an empty UF1 layer is authoritative. Clearing the layer does not hand the UF1 back to the UC1 fill — it leaves the UF1 empty, which is what “I want nothing here” has to mean. Untick UF1 layer to go back to inheriting.

EQ Graph on the UF1 draws the EQ curve for a learned channel strip. Rea-Sixty normally finds the fifteen EQ parameters by SSL’s own parameter names, which a third-party plug-in does not use; when this is on it resolves each one through the map instead. It only makes sense on a map whose domain is a channel strip.

Two controls, one above the other:

• EQ Graph on learned Channel Strips (global) — the default for all of them.
• EQ Graph on the UF1 (per map) — Follow global · Always on · Never. New maps start on Follow global, and the entry spells out what that currently resolves to, so you can tell an override from the global agreeing with it. The same three-way sits on the Learn-HUD’s UF1 tab: the button reads EQ Graph: global / on / off and cycles through them.

The built-in SSL strips ignore all of this — they find their parameters by name and always draw the curve. And when the impersonator is running, the curve on an SSL strip is the plug-in’s own, not our reconstruction of it.

Modifier layers (Normal / Option / Control / Control+Option)

FX Learn → Modifier layers — hold Option, Control, or both, and the surface switches to that overlay mapping.

A user-mapped UC1 control can carry four independent layers — Normal plus three held-modifier overlays, Option, Control and Control+Option — so the same physical knob or button drives a different parameter (with its own invert, knob-travel, push-cycle, and Display label) depending on which modifier you hold.

• Editing: the editor’s layer tab strip (Normal / Option / Control / Ctrl+Opt) selects which layer you’re editing; every per-control edit (bind, invert, Display label, knob travel, push-cycle) applies to the selected layer. Controls with no overlay on the active layer show a dim “ghost” ring — at runtime they inherit their Normal mapping.
• Enabling at runtime: three switches under Settings → FX Learn → Modifier layers — “Hold Option for the FX-Learn Option layer”, “Hold Control for the FX-Learn Control layer” and “Hold Control+Option for the combined FX-Learn layer”. All three are on by default. Holding Option/Alt selects the Option layer, Control the Control layer, and both together the Control+Option layer; with the combined switch off, both-held falls back to Normal, and holding neither is always Normal. The held modifier takes effect live — on the bound control, the UC1 LCD readout, and the Learn-HUD’s layer badge. (Windows: AltGr — the right Alt on European layouts — engages the Option layer, even though Windows reports it as Ctrl+Alt. Because of that, the Control+Option layer is reachable on Windows only with the left Control + left Alt.)
• Fallback: an overlay left unmapped passes through to the Normal mapping for that control, so you only override the controls you want different under a modifier.
• Scope: UC1 only. The Display label (custom name) is per layer — each layer can show its own name on the UC1 readout / Learn-HUD.

Knob travel + curve editor

Every user-learned FX-Learn slot and every UF8 V-Pot binding can carry a custom range, response curve, and encoder sensitivity. Defaults (Min=0, Max=1, sensitivity=1, no curve) make the maths byte-identical to a plain linear mapping, so untouched bindings behave exactly as if the feature wasn’t there.

In the per-slot right-click menu:

• Min / Max rows — a fixed-width 4-column table (label · slider · numeric input · Set button) so both rows line up pixel-perfect. Slider scrubs in 0..1; the input accepts exact values; Set snaps the edge to the plug-in’s current parameter value (handy when you’ve dialled the FX to where you want the limit and just want to capture it). Sliders auto-correct the opposing edge to keep Min ≤ Max.
• Reset — restores Min=0, Max=1.
• Advanced… — opens the Curve editor popup.

The Curve editor popup:

• Sensitivity — a single labelled row (label on its own line, then slider + numeric input + 1x reset button). Range 0.1× .. 4×, encoder-delta multiplier. Combines multiplicatively with Shift = Fine (Shift still quarters on top of the user-set value). Hidden when editing a fader target.
• Canvas — draw a piecewise-linear response curve. Click empty space to add a breakpoint, drag to move, right-click to remove. The Y axis is normalised within [Min..Max], so the Linear preset is always a 45° diagonal regardless of how the range is trimmed.
• Presets — Linear (clears all breakpoints), Log (param rushes to the top — fine control near 0; on a Bipolar V-Pot the curve mirrors around 0.5 for a gentle ramp near centre + coarse at the edges), Exp (param stays small longer — fine control near 1; Bipolar mirrors for fine control at centre + rush to extremes), Reset all (clears curve + resets sensitivity to 1×). Bipolar polarity is re-read on every preset click so flipping it in the parent menu takes effect without re-opening the editor.
• Close dismisses the popup; all edits persist live as you make them.

Feel presets

A tuned “feel” — the bundle of per-control tuning values, independent of which parameter the control is bound to — can be saved into one of ten named preset slots and re-applied to any other knob or V-Pot, on any plug-in. Useful for reusing, say, a Log frequency sweep or a slow stepped-detent across many controls without re-dialling each one.

The preset carries: invert · Min/Max range · sensitivity · curve · polarity · push-reset. It deliberately does not carry the binding (which parameter) or the display label (which names a specific parameter).

At the bottom of the right-click menu on a UC1 knob or UF8 V-Pot:

• Save feel to ▸ — pick a slot (1: (empty) … or an existing name to overwrite); a small dialog asks for a name. The current control’s feel is captured into that slot.
• Apply feel from ▸ — lists the saved presets by name; picking one writes its feel onto the right-clicked control.
• Clear preset ▸ — lists the saved presets; picking one empties that slot.
• Apply this feel to all mappings — takes the right-clicked control’s current feel (invert · Min/Max range · sensitivity · curve · polarity · push-reset) and writes it onto every mapped control in this plug-in’s map, on the layer you’re editing — one action instead of re-applying a preset control by control. Knobs / V-Pots only (toggles have no travel). The same action is on the on-screen Learn HUD (Feel presets ▸ Apply this feel to all mappings).

The ten slots are global — shared across UC1 knobs, UF8 V-Pots, and every plug-in, and they survive a REAPER restart. Because both surfaces draw from the same store, a feel saved from a UC1 knob can be applied to a UF8 V-Pot and vice-versa. Persisted to REAPER’s global ExtState (rea_sixty / knob_feel_presets) as JSON, separate from user_plugins.json. Toggles, buttons, and faders have no continuous travel, so the menu only appears on knobs and V-Pots.

Stepped parameters

When the bound parameter is a discrete-stepped enum (e.g. PSP Townhouse attack/release time selectors, HPF slope pickers, oversampling toggles) — anything REAPER reports as having discrete steps — the editor automatically switches to a stepped-aware layout. Sensitivity, range, and push-reset still apply; curve does not.

• Sensitivity label flips to Detent speed. The default 1.0× means 2 detents per step on V-Pots and UC1 knobs (matches the legacy UC1 stepped feel). 2.0× → 1 detent per step. 0.5× → 4 detents per step. 4.0× and above fire multiple steps per detent. Shift-Fine still applies on top — at slider min (0.1×) Shift gives an effective 0.025× (≈40 detents per step) for ultra-precise crawling.
• Canvas + preset row hidden. A single info line replaces them: Stepped parameter — N values (~X.XXX per step). Curve disabled; Min/Max snap to the step grid.
• Min / Max in the right-click menu snap on commit to the nearest step boundary, so the encoder always traverses real values. Below the table a hint line reads ~K steps reachable in this range.
• Push reset (Value-mode V-Pots) snaps the chosen default to the nearest step.

The runtime accumulator decays after 150 ms of inactivity, so reversing direction at sub-threshold doesn’t leave residual fractional steps fighting the new motion.

JSFX continuous params are handled specially: a JSFX often reports a coarse step size for a knob that is really continuous, which would otherwise force jumpy 2.4 dB jumps. Rea-Sixty normalises the JSFX step against the parameter’s range so such a control resolves finely (continuous), with a fine-control accumulator for sub-step moves.

In the FX-Learn schematic, slots with customised knob travel show:

• Two radial ticks at the Min / Max angles on the on-screen knob (7 o’clock → 12 → 5).
• A small centre dot when a curve is set.

UF8 V-Pots apply the same sensitivity → curve → step math on every encoder movement, so external automation writes stay coherent. UC1 channel-strip / bus-comp knobs and the EXT_FUNCS encoder honour the same path — a UC1 knob and a UF8 V-Pot bound to the same parameter stay in lock-step. Built-in SSL CS / BC slots are intentionally untouched and keep the legacy linear + EQ-gain virtual-notch path; knob travel only kicks in when a user-learned slot is present for the focused plug-in.

UF8 faders intentionally exclude knob travel. Absolute-position + motor feedback creates round-trip races with plug-in quantisation (fader jumps during user motion, snaps on release). The plug-in’s own taper is the right place for fader-side shaping.

Step cycle (rotary)

A V-Pot or UC1 knob can step through a curated list of a plug-in’s button / enum options instead of moving a continuous parameter — for example walking an EQ type A → B → C, or a saturation mode, from a single rotary. Turning scrubs the list and stops at the ends; pressing advances one step and wraps around.

There are two ways to build a step cycle:

• Capture by touch (UF8 V-Pots): with Touch-to-Learn armed, wiggle the V-Pot you want, then click the plug-in’s buttons in the order you want them — each press is recorded as a step. Wiggle the next V-Pot, or turn Touch-to-Learn off, to finish. The plug-in must already be mapped. Continuous controls keep binding the normal way, so a knob wiggle is not captured as steps.
• Curate in the editor: in the FX-Learn V-Pot right-click menu (or the on-screen Learn-HUD), pick Step cycle (turn) and edit the list — drag to reorder, untick to exclude an option, + Add step to add one by name. The same editor opens for UC1 knobs.

On UC1, build step cycles through the editor rather than by touch capture. Re-learning a knob the normal way clears any step cycle on it, so a continuous pot is one re-learn away.

Multi-instance picker

When the focused track has multiple FX matching the map’s name, the editor surfaces a combo to choose which Instance’s live readouts feed the editor. Picked index is per plug-in.

GR meter override

Default GR meter behaviour is to read the host-extension GainReduction_dB value REAPER exposes for any plug-in implementing the PreSonus VST3 convention. That works for most modern compressors out of the box, with no setup.

When a plug-in doesn’t expose the host-extension (or exposes a wrong value), a small GR button next to AutoLearn in the editor header opens a compact override popup:

• Combo lists every VST3 parameter on the editing map; pick the one that reads the plug-in’s gain-reduction value.
• Offset (dB) slider — added before |abs| at render time. Lets you calibrate compressors whose GR reads negative-going (e.g. -6 dB at peak reduction → set offset −6 so the meter reads +6).
• (none) / Use host extension clears the override and restores the default behaviour.

When set, the button shows a tick mark next to the GR label. The override flows through to both the UC1 BC VU motor calibration tables and the DYN GR LED strip. Per-map; saved in user_plugins.json under metering.grVst3Param + metering.grOffsetDb.

Param snapshot

When a catalog entry is created with the FX live on a track, parameter names + value formatters are snapshotted into the catalog so the editor stays usable even if no instance of the plug-in is currently loaded.

Storage

Catalog file at ~/Library/Application Support/REAPER/rea_sixty/user_plugins.json (and equivalent paths on Windows / Linux). Versioned schema (currently v7). Old v5 / v6 files auto-migrate on first load.

Selection Sets pane

Selection Sets pane — eight slots per project, here bound to REAPER track groups.

Eight slots (1..8). The slot acts as a filter — combined with any active Folder Mode / Show-Only-Selected / AUTO-mode filters (a track must pass all of them). Recall toggles — pressing the active slot’s hardware button again deactivates it.

Each slot is either:

• Snapshot — fixed list of REAPER track GUIDs frozen at save time.
• Group — bound to a REAPER track group (1..64). Membership refreshes continuously from REAPER’s track groups across all Lead/Follow categories (ANY category).

The slot rows are laid out as a fixed-width 7-column table so columns align across rows regardless of slot type. Left to right:

• • Slot N — the • prefix marks the currently active slot.
• Global checkbox. When ON, the slot’s content is workspace-global (ExtState, persists immediately). When OFF, project-scoped (saved into the project’s RPP chunk on Cmd+S). Group slots benefit most from Global since “group N” is a stable concept across projects.
• Type combo: Snapshot / Group.
• Name text field.
• Grp spinner (Group rows) — REAPER track group index 1..64. Snapshot rows show (N tracks) in this column instead.
• Save button — Snapshot rows only. Overwrites the slot’s GUID list with the current REAPER selection. (Save is hidden on Group rows — pressing it there would silently convert the slot to Snapshot and drop the live group binding, which is bad UX.)
• Clear button — Snapshot rows only. Empties the slot.

Recall is not a settings-pane button: slot activation lives on the hardware. Bind a button to the Recall Selection Slot (toggle) builtin with param 1..8 — pressing it engages the slot; pressing it again disengages. The • marker shows which slot is currently active.

Auto-mode binding

A single global “Selection-Set Auto-Mode” combo (Settings → Modes → AUTO) applies to every slot. When a slot is active in AUTO Selection Mode + the combo is set to a value other than None, recalling that slot arms its tracks to the selected automation mode. Leaving the slot (or switching out of AUTO) reverts them to Trim/Read.

Slot bank-snap

Recalling a slot snaps the surface to strip 0 = first channel of the set, so larger sets always start at the beginning. Re-pressing the same slot key keeps your current bank position.

Driving from hardware

Bind buttons to Recall Selection Slot (toggle) with param 1..8, and Save current REAPER selection to slot with param 1..8, via Settings → Bindings.

Parameter Groups pane

Parameter Groups pane — eight slots, each collecting parameters across tracks.

Parallel parameter control across multiple tracks: while a slot is active, plug-in tweaks on the focused track copy to every member track of the slot. This works for the SSL Channel Strip / Bus Comp, for learned FX, and now for any other plug-in with no mapping required — as long as the member track hosts the exact same plug-in. (See the Parameter Groups reference section for the full rules.)

Top of the pane:

• Multi-Select acts as temporary Parameter Group (checkbox). When on AND no persistent slot is active AND multiple tracks are selected, those tracks become the live group.

Slot rows are laid out as a fixed-width 6-column table (so columns stay aligned across rows). Per row, left to right:

• • Slot N — • prefix marks an active slot.
• Active checkbox — toggle this slot’s active state. Multiple slots can be active simultaneously (the fan-out is union-of-all-active-slot-members).
• Name text field.
• Member count display: (N members).
• Add Selected button — add currently-selected REAPER tracks to this slot’s membership.
• Clear button — empty the slot’s membership.

Bottom of the pane:

• Remove Selected Tracks from All Groups button — pull every currently-selected track out of every slot.
• Hint text pointing at the Param Group native actions in Settings → Bindings.

Storage

Per-track slot membership lives in P_EXT:rea_sixty:param_groups as an 8-bit bitmask (one bit per slot). Slot metadata (names, active flag) lives in a project-scoped JSON sidecar (param_groups.json).

About pane

About pane — version and codename, setup export and import, and the log paths.

The pane stacks several sections from top to bottom.

Header

• Title + tagline (“Open-source SSL 360 replacement for UF8 / UC1”).
• Author byline: “Made by Frank Acklin @ Stoersender Studio, Switzerland”.
• Button stoersender-studio.ch — opens the studio website in the system browser.
• Commit-count blurb (“This project took N commits so far”).
• “You can buy me a beer:” + paypal.me/FrankAcklin button.

Versions

• Version — git describe --tags --always --dirty of the source tree at build time. On a tagged release: v0.5.3. Past a tag: v0.5.3-N-g<sha> (N commits past the tag). With uncommitted changes: trailing -dirty. Read this line first when triaging issues so it’s obvious which build is loaded.
• Build — date + time of the compiled extension.
• REAPER — the host REAPER version string.
• ReaImGui — the bundled-ABI banner (currently v0.10).

Project

• Repository URL display + Open repository in browser button.

Setup (Export / Import / Reset)

A single bundled file format covering: bindings, learned plug-in maps, Parameter Group slot names, and every Settings preference. Selection Sets + Parameter Group track memberships stay per-project and travel with the .RPP.

• Export setup… — save the bundle to a chosen JSON file.
• Import setup… — load a bundle (replaces in-memory state immediately; warnings reported inline).
• Reset to factory defaults — confirmation popup. Replaces bindings + learned FX + parameter-group slot meta + every Settings preference with the baked-in factory configuration. Per-project Selection Sets and Parameter Group memberships are untouched.

Windows USB driver (Windows only)

Section appears only when the build is Windows.

• Text: binds UF8, UC1 and UF1 to WinUSB so libusb can claim them without Zadig. One-time setup, requires admin. Plug the devices in before pressing, because the rebind only reaches devices attached at the moment it runs. SSL 360° stops seeing them after install; reinstall SSL 360° to revert.
• Current driver binding: one line per device saying what it is bound to right now, with a Refresh button. WinUSB / Rea-Sixty means ours and the device will be picked up; anything else means another driver still owns it. It only reads, so it raises no admin prompt, and it re-reads itself when an install or uninstall finishes.
• Install UF8/UC1/UF1 WinUSB driver button: runs the in-product installer with a UAC and publisher prompt, then reports what actually happened. Either installed, or failed with the path of a log you can paste, or cancelled at the permission prompt. Cancelling is not a failure and is named as such. While it runs, both buttons disappear so a second press cannot race the first. After it finishes, unplug and replug the devices.
• Where the devices go afterwards. Our INF puts them in class USBDevice, so in Device Manager they move out of Universal Serial Bus controllers into Universal Serial Bus devices, and they are renamed to SSL UF1 (Rea-Sixty / WinUSB) or SSL UF8 / UC1 (Rea-Sixty / WinUSB). Looking for the old name in the old category and finding nothing does not mean the unit is dead.
• Uninstall button: runs pnputil /delete-driver /uninstall (UAC prompt), removes every copy of rea_sixty_winusb.inf from the driver store, and clears the Rea-Sixty signing cert from the My / Root / TrustedPublisher stores. After uninstall, unplug and replug devices; the SSL 360° driver (or whatever was previously bound) takes over again. If a copy is ever left behind, the supported cleanup is pnputil /delete-driver oemNN.inf /uninstall /force in an admin prompt, never regedit, which Windows refuses.

Linux udev rule (Linux only)

Section appears only when the build is Linux.

• Text: grants non-root USB access by installing /etc/udev/rules.d/99-rea-sixty.rules. One-time setup, requires sudo (graphical password prompt).
• Install Linux udev rule button — runs pkexec, writes the rule, reloads udev. After install, unplug + replug UF8 + UC1, then restart REAPER.
• Uninstall button — pkexec removes /etc/udev/rules.d/99-rea-sixty.rules, then reloads + triggers udev. After uninstall the surface drops back to root-only USB access until a rule is reinstalled.

Logs

• Lists the diagnostic log paths (reaper_uf8_frames.log, reaper_uf8_colors.log, and the rest). Logs live in the system temporary folder: /tmp on macOS and Linux, %TEMP% on Windows. The pane shows the real path for your platform rather than assuming one.
• Reveal log folder button — opens the folder in Finder, Explorer or your file manager.
• Console output checkbox, off by default. REAPER pops its Console window open for every message, which is noise when a device simply is not connected. The same text still goes to the log files either way, so nothing is lost — switch it on while diagnosing.

On-Screen Display

Rea-Sixty draws several optional helpers on REAPER’s own screen. Each is rendered by a companion script that auto-installs and auto-starts with the extension — no manual ReaScript setup. Enable the overlay, focused-track panel, and mode-change banner in the Settings window; the Learn-HUD is toggled by an action.

MCP Inserts overlay

A highlight drawn directly on the Mixer’s track Inserts (FX) list, marking the active Channel-Strip plug-in (default yellow) and active Bus-Comp plug-in (default red) on the surface-focused track / BC anchor. The default is an outline only (Fill opacity 0).

Enable via Settings → Appearance → On-screen → “Show MCP Inserts overlay”. Controls (the CS / BC colours are shared with the focused-track panel):

• CS colour / BC colour pickers.
• Fill opacity (0 = outline only) and Border opacity.
• Inserts row height and Inserts top offset — fine-tune the box to line up with your theme’s FX-list rows.

Focused-track panel

A frameless, Gridbox-style box that floats on the Arrange (or any window you drag it onto), showing the surface-focused track’s name, its active CS / BC plug-in (as short names — your FX-Learn displayShort, with the SSL factory plug-ins shown as CS2 / BC2), and the last-touched parameter per domain. A touched parameter shows your custom Display label when one is set (for the held FX-Learn layer), matching the surface readout.

Enable via Settings → Appearance → On-screen → “Show focused-track panel”. Drag the body to move, drag the edges to resize; position + size persist. Right-click menu:

• Layout — Two lines (CS / BC) or One line.
• Track name — Show track name; Use track colour (draws the track name in the track’s REAPER colour — falls back to grey if the track has no custom colour assigned); Full name / Smart abbreviate / Abbreviation length; Before / After CS/BC (whether the track name sits before or after the plug-in tag).
• Customize — Font size, Corner radius, Background / Border / CS / BC colour.
• Elements — what the panel shows besides the track name and the plug-in tags. Mode indicator (Sel / Encoder) — the UF8’s Selection Mode and Channel-Encoder Mode. UF1 encoder mode and UF1 jog mode — the UF1’s own two rings, which are separate from the UF8’s and are scrolled blind under a held key, so this is the only always-on readout of them. Flash mode changes — the transient banner, in the panel instead of its own window. Settings + HUD buttons, CS / BC cycle buttons, and Click plug-in name to open. All off by default except the last.
• Align — centre the box horizontally or vertically on screen.
• Load on startup — auto-launch the panel when REAPER starts (writes a marked one-liner into Scripts/__startup.lua; untick to remove it).
• Close panel.

Mode-change banner

A transient on-screen banner that flashes the new mode for ~2 s whenever you switch Selection Mode or Channel-Encoder Mode, then auto-hides — a quick “what did I just switch to?” confirmation without looking at the surface.

Enable via Settings → Appearance → On-screen → “Show mode-change banner”, or bind / run the Mode-change banner: show / hide (flashes Sel / Encoder mode) action. It is off by default and remembers its on / off state across restarts.

Drag the banner (while it’s visible) to reposition it — position persists. Right-click it for font size, duration, and colours.

Learn-HUD

Learn-HUD, Channel Strip — the mockup mirrors the mapped plug-in, and mapped parameters are dotted in the list on the right.

Right-clicking a pot opens its per-control menu: polarity, knob travel, push-to-reset and the feel presets.

The Advanced popup — the knob-travel curve editor, with Linear, Log and Exp presets.

Learn-HUD, Bus Comp — the GR needle tracks the plug-in, here bx_townhouse.

Learn-HUD, UF8 — all eight strips, driving SSL Delta Control 16.

The same per-control menu on a UF8 V-Pot.

Soft-key right-click — per-binding LED colour from the palette.

A dockable window showing the focused plug-in’s UC1 control → parameter assignments as a grouped, readable text list — so you can see what each knob / button does without opening Settings.

• Toggle with the Learn-HUD: show / hide (focused plug-in assignments) action (bind it to a surface button) or the REAPER action “Rea-Sixty: Toggle Learn-HUD” (REASIXTY_LEARN_HUD_TOGGLE). There is no Settings checkbox.
• CS / BC / UF8 tabs at the top, auto-following the focused domain (click to pin one). The BC tab follows the BC anchor / BC-encoder selection, and a CS-mapped plug-in only ever shows on CS (and BC on BC) — the two domains never cross. The UF8 tab shows the per-strip UF8 assignments (V-Pot / fader / soft-keys) for the focused plug-in and offers the same learn / tuning controls.
• Each row = the SSL slot name + the bound parameter’s name (or your custom Display label). Rows are grouped by section (Filter / EQ / Dynamics / Gate / I-O for CS; the Bus-Comp knobs for BC), with Dynamics + Gate in a right-hand column to mirror the hardware.
• A layer badge (NORM / OPT / CTRL / C+O) shows the held FX-Learn modifier layer; the list follows it live. On a modifier layer the list shows only the controls you actually overlaid on that layer — controls that fall through to their Normal mapping read as unmapped, so you can see at a glance what’s layer-specific.
• Right-click → View switches between the grouped text List and a hardware Mockup (the UC1/UF8 face). Right-click → Text size (Small … Huge); the menus themselves honour your Appearance → Font Size. The window size persists globally.
• Click a row (or mockup control), then wiggle that plug-in’s parameter to learn it onto the control (user maps only — built-in SSL maps are factory-fixed and show a hint instead).
• Right-click a control (list row or mockup knob/button) for a per-control menu: Learn (wiggle a parameter), Invert (flip the control’s polarity), Rename… (set a custom Display label; empty reverts to the default name), Unbind, plus the knob-travel / curve editor, feel presets and stepped-parameter controls — full FX-Learn parity without opening Settings. All act on the active modifier layer; Invert / Rename / Unbind are disabled on an unmapped control, and built-in SSL maps show the factory-fixed hint.
• The window’s ☰ menu carries a CS Favourite submenu — favourite the live Channel-Strip into a favourite slot (greyed when no CS is on the focused track). See chapter Favourites.

Native actions

Bind any of these to a UF8 / UC1 control in Settings → Bindings → (button) → Native. Actions that take a parameter (slot number, soft-key index, etc.) are flagged below.

The picker groups them into categories — Selection Modes, Encoder Modes, Cycle Actions, Plug-in, Layer, Soft-Key Bank, SSL, Master, and so on. Hardware Modes is the largest: it collects everything that changes what the surface is doing rather than acting on a track — FLIP and PAN, Folder Mode and Show Only Selected, Home, SSL Strip and UF8 Plug-in Mode, the on-screen panel toggles, Touch-to-Learn, the mirror and follow settings below, and Restart. The sections in this chapter are grouped by function rather than by category, so a single category’s actions appear in several places.

Selection Mode toggles

Switch which Selection Mode is active (see chapter Selection Modes for what each one does). Pressing a mode’s toggle while it is already active returns to NORM.

• Selection Mode → NORM (SEL Button) — set the active Selection Mode to NORM (the default).
• Selection Mode → REC (SEL Button) — toggle REC mode (SEL = arm).
• Selection Mode → REC + MON (SEL Button) — toggle REC+MON mode (SEL = arm + monitor).
• Selection Mode → AUTO (V-Pot) — toggle AUTO mode (SEL = step the track’s automation mode; V-Pots show automation indicator).
• Selection Mode → FX Cycle (V-Pot) — toggle FX Cycle Sel-Mode (V-Pots walk every FX per strip; push opens active FX).
• Selection Mode → Instance Cycle (V-Pot) — toggle Instance Cycle Sel-Mode (V-Pots walk only Instances per strip).
• Selection: Clear All Tracks — clear the REAPER track selection.

Channel Encoder mode toggles

Change which job the large CHANNEL encoder does. The current mode persists across REAPER restarts.

• Encoder Mode → Channel Select — Channel Select (the default; rotation moves track selection ±1).
• Encoder Mode → Nudge — playhead nudge. Step size is set in Settings → Modes → Nudge: an amount + unit (ms, seconds, grid, bars, samples, frames). Default is one grid step per detent — “Grid” follows the project grid, so it covers beats and bars.
• Encoder Mode → Mousewheel — synthesised mouse-wheel under the screen cursor (use to scroll plug-in windows, browsers, etc.).
• Encoder Mode → Markers (prev / next) — step prev / next REAPER marker.
• Encoder Mode → Bank by 1 channel — surface bank by 1 strip per detent.
• Encoder Mode → Last Touched Param — step the last-touched REAPER parameter ±.
• Encoder Mode → Instance Cycle — Instance Cycle on the focused track.
• Encoder Mode → FX Cycle — FX Cycle (every FX) on the focused track.
• Encoder Mode → Instance Cycle (across tracks) — Cycle Instance across tracks: Instances on the focused track, then one detent per track boundary onto the neighbour’s first/last Instance. Hard-stop at the project edge.
• Encoder Mode → FX Cycle (across tracks) — Cycle FX across tracks: same cross-track behaviour for every FX.
• Encoder Mode → FX Move (in chain) — move the active FX up / down within the focused track’s chain on rotation (within-chain only; hard-stop at the ends).
• Encoder Mode → Selection Set Cycle — step through populated Selection Set slots (off → 1 → 2 → … → off).
• Encoder Mode → CS Cycle (favourites) — cycle the active CS through the favourite slots (see chapter Favourites).
• Encoder: dispatch by current mode — routes rotation to whichever encoder mode is currently set. Bound by default to the CHANNEL encoder so rotation just “does the right thing”; rebind if you want a fixed behaviour.

Direct encoder rotation handlers

Bind these to a non-CHANNEL rotation (UC1 Encoder 2, footswitches with rotation, etc.) when you want a single fixed behaviour regardless of the global encoder mode.

• Encoder: cycle plug-in instance — Instance Cycle on focused track (rotation = step ±).
• Encoder: cycle FX (all on focused track) — FX Cycle on focused track.
• Encoder: cycle instance (across tracks) — Cycle Instance across tracks (direct): Instances on the focused track, then cross to the adjacent track at the edge.
• Encoder: cycle FX (across tracks) — Cycle FX across tracks (direct): every FX, crossing to the adjacent track at the edge.
• Encoder: move active FX up/down in chain — direct-rotation counterpart of the FX Move mode: rotation moves the active FX up / down in the focused track’s chain (hard-stop at the ends).
• Encoder: select prev/next track — step REAPER track selection ±1.
• Encoder: scroll tracks — visible-track scroll + select + UC1 focused-track follow + force CS-domain focus. Like Encoder: select prev/next track but UC1-aware. Default binding on UC1 Encoder 1.
• Encoder: extend track selection (Shift+Arrow style) — extend the REAPER track selection across the visible space, anchored to the focused track (Shift+Arrow-style range select).
• Encoder: nudge playhead — playhead nudge ±.
• Encoder: scroll mouse-wheel under cursor — synthesised scroll-wheel under the screen cursor.
• Encoder: scroll BC anchor track — scroll the UC1’s Bus Comp anchor track ±1 (which track the BC section is pinned to). REAPER selection and UF8 bank stay put.
• Encoder: scroll and select BC anchor track — same scroll as Encoder: scroll BC anchor track, but additionally pulls REAPER selection + UF8 bank to the new BC anchor. Use this when you want the BC encoder to drive the whole surface, not just the UC1 carousel.
• Encoder: scroll Focus Set members — encoder scroll within the Focus Set (see below). Walks the set in REAPER project order; works regardless of whether the Focus Set is pinned.

Plug-in Mixer modes

Engage / disengage the on-surface plug-in editing modes.

• Toggle SSL Strip Mode — toggle SSL Strip Mode. While active, fader → CS Fader Level, V-Pots → CS controls, soft-keys → CS bypass / EQ-In / Filter-In.
• Toggle SSL Strip Mode (with GUI) — same, AND open the CS plug-in’s floating GUI (pinned per the GUI-pin settings).
• Toggle UF8 Plug-in Mode — toggle UF8 Plug-in Mode. All 8 strips become the strips of a single FX-Learn-mapped plug-in. Bank ← / → flips between fader-banks A / B for ≥9-control plug-ins.
• Toggle UF8 Plug-in Mode (with GUI) — same, AND open the plug-in’s floating GUI.

Plug-in commands

These act on the FX the cursor currently points at on the focused track (the FX that the last cycle landed on; defaults to the first online Instance after a fresh load).

• Plug-in: toggle focused GUI — toggle the floating GUI of the cursor FX. With the Device option Auto-engage UF8 Plug-in Mode on, also engages UF8 Plug-in Mode if the cursor lands on a UF8-mapped plug-in.
• Plug-in: toggle bypass (active FX) — toggle bypass of the cursor FX.
• Plug-in: toggle offline (active FX) — toggle offline state of the cursor FX.
• Plug-in: next preset (active FX) — load the next preset.
• Plug-in: previous preset (active FX) — load the previous preset.
• Plug-in: cycle preset (encoder, active FX) — encoder-rotation variant that steps presets ± by detent count.
• Plug-in: move active FX up in chain — move the cursor FX up one slot in the track’s FX chain.
• Plug-in: move active FX down in chain — move the cursor FX down one slot.
• Plug-in: toggle FX chain window (focused track) — open / close REAPER’s FX chain window for the focused track (pinned per the FX-chain pin settings).
• Plug-in: close all floating FX windows — close every floating FX window in the project.
• FX param: step up — step the FX-Learn slot a V-Pot is bound to upward from a button. Action-picker exposes the slot target (combo built from the built-in plug-in map registry — link IDs are stable across SSL CS / BC variants), a step-size slider, and a wrap-vs-clamp checkbox. Honours the slot’s range, curve, and sensitivity, so a button bound to FX param: step up and a V-Pot bound to the same slot stay in sync. Useful for “+1 dB” or “next preset value” buttons.
• FX param: step down — same as FX param: step up with the sign flipped.

Sticky Pot

Pin one plug-in parameter to a track’s V-Pot. The pin stays on that track — it moves with the track across banks and overrides the strip’s normal V-Pot target (the focused parameter, or pan) until you clear it. Each track can hold its own pin. A pinned strip’s value line shows the parameter’s name (with a leading *) and value, and the readout ring follows it.

• Sticky Pot: Get next touched Parameter — arm capture. The next plug-in parameter you touch — in the plug-in’s own window, or on a controller — pins to the track it belongs to. Touch the parameter you want and it sticks. While capture is armed, a V-Pot press on a strip clears that strip’s pin instead of capturing.
• Sticky Pot: Toggle active/inactive — suspend every pin at once (so the V-Pots return to their normal view), then bring them all back. The pins themselves are kept. Lit while active.

A V-Pot press on a pinned strip resets its parameter to the centre (a two-state parameter flips instead). Pins are saved with the project and restored on reload — keyed to the track and the plug-in, so they survive re-banking and FX-chain reorders.

Under FLIP, the pin moves onto the fader instead of stepping aside. FLIP assigns the current V-Pot parameter to the fader, and the pin is that parameter — so the fader’s value, motor follow and touch all track the pinned parameter, while the V-Pot rides Volume as it normally does under FLIP.

Sticky Pot otherwise steps aside automatically whenever a mode already owns the V-Pot: UF8 Plug-in Mode, SSL Strip Mode, PAN held, and the Instance / Instance-Cycle Selection Modes. Release the mode and the pins reappear.

Favourites

Replace or duplicate the active plug-in, carrying values across (see chapter Favourites). All of these act on every selected track, else the surface-focused track. Each exists three times: for the Channel Strip, for the Bus Compressor, and in a Focused Domain form that follows whichever you are working on.

• Switch to CS Favourite 1 … 8 / Switch to BC Favourite 1 … 8 / Switch to Favourite 1 … 8 (Focused Domain) — replace the active plug-in with favourite N. Lit when it already is that favourite.
• Copy to CS Favourite 1 … 8 / Copy to BC Favourite 1 … 8 / Copy to Favourite 1 … 8 (Focused Domain) — insert favourite N below the active plug-in with the values carried, and bypass the original. An instant A/B.
• CS Favourite Cycle / BC Favourite Cycle / Favourite Cycle (Focused Domain) — step through the favourites; on an encoder, one step per detent.
• CS Favourite Copy/Own / BC Favourite Copy/Own / Favourite Copy/Own (Focused Domain) — flip that domain between carrying live values and restoring each favourite’s own settings.

The cycles are also available as Channel-Encoder modes — Encoder Mode → CS Cycle (Favourites), → BC Cycle (Favourites) and → Favourite Cycle (Focused Domain) (also listed under Channel Encoder mode toggles).

Instance navigation

These step only the Instance index (CS / BC / UF8-Mode-mapped). They are the focused-domain equivalent of the Instance Cycle Sel-Mode, but as standalone bind targets.

• Instance: next (focused domain) — next Instance in the focused domain on the focused track. Wraps.
• Instance: previous (focused domain) — previous Instance in the focused domain.
• Focus → Channel Strip — set the focused domain to Channel Strip (so subsequent Instance: next walks CS Instances, UC1 CS section refreshes).
• Focus → Bus Comp — set the focused domain to Bus Comp.

The focused parameter slot is preserved across an Instance Cycle when the new instance offers the same LinkSlot (same domain, same parameter convention). Stops the focused-param surfaces (UC1 BC/CS encoder, V-Pot mirroring) from snapping back to slot 0 — typically the Bypass / FX In toggle — on every cycle step. Cross-domain cycles (CS → BC) and UF8-only user maps still reset to slot 0 because the slot position isn’t meaningful there.

Per-track automation modes

Set the focused track’s automation mode. (Automation: Off / Trim and Automation: Trim are alternate names for the same REAPER mode 0; both kept for binding-file compatibility.)

• Automation: Off / Trim, Automation: Trim — mode 0 (Off / Trim).
• Automation: Read — mode 1.
• Automation: Touch — mode 2.
• Automation: Write — mode 3.
• Automation: Latch — mode 4.
• Automation: Latch Prv — mode 5 (Latch Preview).

Project-global automation override

Same six modes, but applied via REAPER’s global override (overrides every track without changing each track’s own mode).

• Automation: Off / Trim (Global), Automation: Trim (Global), Automation: Read (Global), Automation: Touch (Global), Automation: Write (Global), Automation: Latch (Global), Automation: Latch Prv (Global).
• Automation: Zero All Tracks (→ Trim/Read) — reset every track’s automation mode to Trim/Read (mode 0). Useful to revert a write session.

Bank navigation

• Bank ← (UF8 Plug-in Mode: fader-bank; else ±strip scroll) — scroll the surface 8 strips left. In UF8 Plug-in Mode the same button flips between fader-banks A / B (for 16-strip plug-ins) instead.
• Bank → (UF8 Plug-in Mode: fader-bank; else ±strip scroll) — scroll 8 strips right (same fader-bank flip in UF8 Plug-in Mode).
• Bank by 1ch ← (one strip) / Bank by 1ch → (one strip) — scroll one strip at a time.
• Home (clear routing toggles) — clear all routing toggles (send / receive views) so V-Pots and faders return to track volume + pan. Also resets the send-list page to the start.
• Page ← (soft-key bank prev) / Page → (soft-key bank next) — step the SSL Soft-Key PAGE bank (prev / next of the 6 CS banks + 2 BC banks).

DAW Layer keys

• Switch to Layer 1 / Switch to Layer 2 / Switch to Layer 3 — switch SSL DAW layer.

SSL Soft-keys

• Select soft-key bank (param 0..5) — select Soft-Key bank N (CS banks 0..5; in Bus-Comp mode, 0..1).
• SSL Soft-Key (current bank, slot 0..7) — fire SSL Soft-Key cell N in the currently selected bank.
• SSL Standard Bank: V-POT (param: 0..7) — fire SSL V-Pot N (bank-current). The native bindings the Top Soft-Keys use to map to the active CS/BC bank’s parameters. (Explicit-bank siblings SSL Standard Bank 1 … SSL Standard Bank 5 target a fixed bank.)

Send / Receive

All of these are toggles, and all take param: 0 = Faders, 1 = V-Pots to choose which control the route lands on. In the binding editor that choice is the Flip checkbox. See Send and Receive views for what the strips then do.

• 8 sends of focused track — spread the focused track’s send list across the eight strips.
• 8 receives of focused track — same for its receives.
• Send 1 ↦ all tracks … Send 8 ↦ all tracks — eight separate actions. Each keeps every strip on its own banked track and drives that track’s send number N.
• Receive 1 ↦ all tracks … Receive 8 ↦ all tracks — same for receives.

Home (clear routing toggles), listed above under bank navigation, turns all of them off at once.

Selection Sets

• Recall Selection Slot (toggle) (param: 1..8) — toggle slot N: activate if inactive, deactivate if already active. Activation filters the surface to the slot’s tracks and snaps the bank to strip 0 = first slot track. Coexists with the Focus Set (the slot filters, the Focus Set pins within the filtered list).
• Save current REAPER selection to slot (param: 1..8) — save the current REAPER track selection into slot N.
• Encoder: cycle Selection Set (off → 1 → 2 → … → off) — encoder-rotation handler that steps off → first populated slot → next → … → off. Skips empty slots.
• Focus Set — pin-source actions (Focus Set: add selected / remove selected / pin (toggle) / clear / toggle selected / set from selection / pin focused track, plus the Encoder: scroll Focus Set members encoder action). See Selection Sets → Focus Set for the full list and behaviour. Focus Set: pin (toggle) lights its bound button via LED state-of while pinning is on.

Surface filters / view toggles

• Toggle Folder Mode (parents only) — toggle Folder Mode (only top-level tracks visible; folder children appear on spill).
• Toggle Show Only Selected — toggle Show Only Selected (only currently-selected REAPER tracks appear).
• Open / Close Rea-Sixty Settings — open / close the Rea-Sixty Settings window. Default binding for the 360° key.
• Surface mirrors: TCP / Surface mirrors: MCP — choose which window’s track visibility the surface follows: the Arrange view’s track panels (TCP) or the Mixer (MCP). Hiding a track in the chosen window removes it from the surface. These are not a toggle but a mutually-exclusive pair, so a bound key sets one mode absolutely and lights while that mode is the active one — which means you can bind both and see at a glance which is on. The choice is remembered between sessions.
• TCP follows selection — toggle whether selecting a track on the surface scrolls the Arrange view to it. Same setting as Settings → Behaviour → Tracks.

Nav overlay (Markers + Regions)

• Nav Mode (Markers & Regions): toggle — toggle the Nav overlay (UF8 strips show markers / regions, soft-keys jump to them).
• Nav Mode: Markers only (no drill) — Nav overlay restricted to markers only.
• Nav Mode: Regions only (no drill) — Nav overlay restricted to regions only.

Track arming

• Tracks: Arm All / Unarm All (toggle) — toggle arm on every track in the project. State is “all armed” ↔ “all unarmed”; mixed state arms everything first, then needs a second press to unarm all.

Master track

• Pin Master to UF8 Strip 1 — pin the REAPER Master bus onto UF8 strip 1 (toggle). Bindings category Master; also the REAPER action Rea-Sixty: Pin Master to UF8 Strip 1.
• Pin Master to UF8 Strip 8 — pin the Master onto UF8 strip 8 (toggle). REAPER action Rea-Sixty: Pin Master to UF8 Strip 8. See Master track for Replace vs Shift layout and the mode interactions.

Brightness

Each press steps one level (Dark → Dim → Half → Bright → Full). The “Both” variants step LEDs + LCDs in lockstep.

• Brightness LEDs + / Brightness LEDs - — LED ring + button-LED brightness.
• Brightness LCDs + / Brightness LCDs - — UF8 LCD + UC1 LCD brightness.
• Brightness Both (LEDs+LCDs) + / Brightness Both (LEDs+LCDs) - — combined.

Zoom

Each maps to a REAPER zoom action (defaults for the UF8 cursor pad).

• Zoom in vertically — zoom in vertically (action 40111).
• Zoom out vertically — zoom out vertically (40112).
• Zoom out horizontally — zoom out horizontally (1011).
• Zoom in horizontally — zoom in horizontally (1012).
• Zoom to fit project — zoom to fit the whole project (40295).

Jog Modes

Which object the UF1’s jog wheel is working on (see the chapter Jog Mode). The usual picker is SCRUB held plus a turn of the wheel; these actions put the same choice on a button. Each direct setter lights while its object is the live one.

• UF1 Jog Mode: cycle steps to the next object.
• UF1 Jog Mode: Playhead puts the wheel on the play cursor.
• UF1 Jog Mode: Scrub puts it on audible scrub.
• UF1 Jog Mode: Items puts it on the selected items.
• UF1 Jog Mode: Envelope puts it on the selected envelope points.
• UF1 Jog Mode: Razor Edit puts it on the razor edit.
• UF1 Jog Mode: Fades puts it on the fades of the selected items.

Jog Actions

The individual things the nav cross does, one named action each. That is what makes the cross bindable per object, and it also means any of them can go on any other key. They are offered in every surface’s picker, because they act on the UF1’s jog state rather than on the key that fires them.

Razor. Each of these aims the wheel at a different part of the razor edit:

• Razor: target whole area
• Razor: target left edge
• Razor: target right edge
• Razor: target top edge
• Razor: target bottom edge

Envelope:

• Envelope: previous point and Envelope: next point walk the selection along the points of the selected envelope. The (add) twin of each extends the selection instead of replacing it.
• Envelope: lane above and Envelope: lane below select the previous or next visible track envelope. Hidden lanes are stepped over.
• Envelope: jog edits points / playhead is a toggle. The wheel either moves the selected points or nudges the play cursor. On the playhead, Cmd pulls a time selection exactly as it does in Playhead mode: the first detent drops an anchor at the cursor, the rest drag the far end, and releasing Cmd leaves the selection standing. Being a toggle, the key it sits on lights in its active colour while the wheel is on the playhead and in its inactive one while it is on the points, so the nav cross shows which of the two you are in, in the colours you gave that key.

Items:

• Items: previous item and Items: next item take the item before or after the current one on the same track, and have (add) twins as well.
• Items: item on track above and Items: item on track below take the nearest item on the next track that has one, so empty tracks are skipped. Also with (add) twins.

Fades. Each of these means two things, because the centre key decides which of the two the cross is doing. That is deliberate: a key can only hold one binding, so a switch that changes what the whole cross is for has to live inside the actions rather than beside them.

• Fades: fade-in / previous item and Fades: fade-out / next item aim the wheel at the item’s left or right fade while the cross is aiming, and walk to the previous or next item on the track while it is walking. Both have (add) twins for the walking half.
• Fades: next fade type / item above and Fades: previous fade type / item below step the aimed fade through REAPER’s seven types while aiming, and take the nearest item on the track above or below while walking. (add) twins as well.
• Fades: cross aims fades / walks items is the toggle between the two. Its LED is lit while the cross is walking.
• Fades: follow the fade with the view turns the following view on and off. It is on by default, and switching it off puts back the view you started from.

Two that are not tied to a single object:

• Zoom to selection (toggle) saves the arrange view and zooms it to whatever the live object is: the selected items, the selected envelope points, or the whole project when there is no selection to aim at. Press it again and the view you came from is back. Nothing carries this at the factory, it is here for anyone who wants it on a key of their own.
• Jog: hold to drag content needs its behaviour set to Hold. In Razor it takes the whole area and drags its content with the wheel; in Items it arms a drag of the selected items, and a press that turns nothing falls back to Zoom to selection. On Momentary it would fire once and never let go, so the behaviour is part of the action rather than a preference.

The older collective Jog Mode: nav actions are still honoured for anyone who bound them by hand, but they are no longer offered in the picker. Each of them meant something different in every object, which is the thing the named actions above exist to undo.

Parameter Groups

Per-slot actions also exist for slots 1..8: Param Group N → Add Selected Tracks, Param Group N → Clear Members, and Param Group N → Toggle Active.

• Param Groups → Remove Selected from All — remove the currently-selected tracks from every Parameter Group slot they appear in.
• Param Groups → Multi-Select acts as Temp Group — toggle the “multi-select acts as a temporary parameter group” behaviour. When on, any multi-track selection becomes the active group for parameter-fan-out; when off, the active group is whichever persistent slot is selected.

Modifier keys

When held, these shift every other binding to its modifier slot. The three matching UF8 keys (Shift / Cmd / Ctrl, or FINE for Shift) are bound to them by default but you can rebind to any other button to relocate the modifier.

• Modifier: Shift / Fine (double-click latches) — Shift modifier. Double-click latches (press once more to unlatch). The SSL FINE key uses this builtin.
• Modifier: Cmd — Cmd modifier (macOS) / Windows key (Win) / Super (Linux).
• Modifier: Ctrl — Ctrl modifier.

Surface-state toggles

• Toggle FLIP (fader ↔ V-Pot) — swap fader and V-Pot values for the active routing target (e.g. swap send level and send pan between V-Pot ring and motorised fader).
• Toggle V-Pots → Pan — force V-Pots to Pan regardless of the active Selection Mode. Escape hatch from cycle / REC / AUTO when you need pan back quickly.
• Learn-HUD: show / hide (focused plug-in assignments) — show / hide the Learn-HUD (focused plug-in’s assignments). Bindable here (category Hardware Modes) and available as the REAPER action Rea-Sixty: Toggle Learn-HUD (REASIXTY_LEARN_HUD_TOGGLE). See On-Screen Display → Learn-HUD.
• Focused-track panel: show / hide (frameless, on Arrange) — show / hide the frameless focused-track panel. See On-Screen Display → Focused-track panel.
• Mode-change banner: show / hide (flashes Sel / Encoder mode) — show / hide the transient mode-change banner. See On-Screen Display → Mode-change banner.
• Touch-to-Learn: arm / disarm (touch a control, wiggle a param) — arm / disarm Touch-to-Learn. While armed, touch a control on the surface and wiggle a plug-in parameter to learn it to that control on the fly — FX-Learn without opening Settings. Disarming cancels and clears the pending learn. Bindable here (category Hardware Modes); the soft-keys switch to the V-Pot layer while armed, and a V-Pot press learns as a Toggle binding. Pressing several of the plug-in’s buttons in a row while a V-Pot is armed builds a step cycle on it (see FX Learn → Step cycle).
• Toggle UC1 Out-Gain (Mapped ↔ REAPER Fader) — flip the UC1 Out Gain knob between its mapped SSL Channel-Strip Fader Level parameter and REAPER’s track volume fader. While engaged, the knob drives track volume even on tracks with no channel-strip plug-in, and the LED ring + readout follow the track fader. Bindable from the Bindings picker (under Hardware Modes) and available as the REAPER action Rea-Sixty: Toggle UC1 Out-Gain (Mapped ↔ REAPER Fader) (REASIXTY_UC1_OUTGAIN_FADER_TOGGLE) for the keyboard / toolbar.
• FX: Quick Learn Project / FX: Quick Learn Track — run the AutoLearn sweep over the whole project / the focused track. Same one-shot as the REAPER actions Rea-Sixty: Quick Learn ….
• Restart Rea-Sixty (re-open devices) — close the UF8, UC1 and MIDI ports and open them again, so a surface that has stopped responding can be revived without the trip through Preferences → Control Surface. Bindable here (category Hardware Modes) and available as the REAPER action Rea-Sixty: Restart Rea-Sixty (re-open devices) (REASIXTY_RESTART) — worth a keyboard shortcut, since a hardware key is no help when the hardware is the thing that needs re-opening. This re-opens the devices, not the extension: REAPER holds the plug-in for the life of the process, so a new build still needs REAPER restarted.

Internal (not user-bindable)

• The REAPER Action picker writes an internal carrier into a binding’s action field when you select a REAPER action by name. The picker UI is what you use; that storage name is not shown in the Native action list.

Plug-in Mixer modes

SSL Strip Mode

Engage with the Plug-in button (default), via the Toggle SSL Strip Mode / Toggle SSL Strip Mode (with GUI) actions, or via “SSL Strip Mode follows focused plug-in window” auto-engage on a CS plug-in.

While SSL Strip Mode is on:

• Fader → CS Fader Level (the CS plug-in’s own fader parameter, not REAPER’s track volume)
• V-Pots → CS controls (per SSL’s standard 6 soft-key banks)
• Soft-keys → CS bypass / EQ-In / Filter-In etc.
• The colour-bar Type zone shows the CS variant name (CS2, 4K B, 4K E, 4K G) or the user rename
• UC1 follows the same CS Instance

The with_gui variant also opens the CS plug-in’s floating GUI alongside, pinning it via the pin-position settings.

Page ← / Page → step through the 6 SSL-defined Channel Strip soft-key banks. Plug-in again (or any other Plug-in Mode toggle) exits.

Free soft-key slots (CS / BC)

On Layer 1, Q1 (SSL CS) and Q2 (SSL BC), the Top-Soft-Key slots the SSL plug-in leaves empty on a page — all of the unused BC banks plus the gaps in the populated banks — are now user-assignable. The slots the plug-in actually occupies stay plug-in-driven and show their fixed parameter name; the empty ones open the normal slot editor in Settings → Bindings. Assign any action and it fires when that Top-Soft-Key is pressed in that CS / BC page, with its own LED and label. This lets you fill the dead keys on the SSL banks with your own functions without disturbing the SSL mapping.

CS / BC soft-key parameter preview

In the Bindings schematic the Top-Soft-Key labels for CS (Q1) / BC (Q2) follow the page you’ve selected to edit, so you can preview every CS / BC bank’s parameter names — not just the one engaged live on the surface.

UF8 Plug-in Mode

Engage with the Toggle UF8 Plug-in Mode (or Toggle UF8 Plug-in Mode (with GUI)) action. Default binding: long-press the Plug-in button.

While UF8 Plug-in Mode is on:

• All 8 strips become the strips of a single FX-Learn-mapped plug-in — addressable even when fewer than 8 REAPER tracks are visible (strips past the bank-track count source their content from the focused FX instead of going blank).
• Two fader banks (16 strips total for plug-ins that need more than 8 controls) — Bank ← / Bank → flips between A and B.
• 8 soft-keys above each strip drive the FX Learn-mapped TopSoftKey slot per bank.
• The active group of soft-key cells is the bank’s “active TopSoftKey ring” — 1 of 8 ringed brightly.
• Unassigned banks act as no-ops (LEDs dim).

The active plug-in is the focused track’s first UF8-Mode-mapped instance, or the Instance the cursor is currently on.

Per-V-Pot customisation lives in Settings → FX Learn → (right-click the V-Pot on the schematic). Each (fader-bank, soft-key bank, strip) V-Pot carries its own V-Pot mode (Value / Toggle), Polarity (Unipolar / Bipolar — Bipolar renders the LCD ring centre-out, like SSL Pan), Push reset value, display label, strip colour, and knob travel (Min / Max range + response curve + sensitivity — see Knob travel + curve editor under FX Learn pane). Fill Sequential propagates every one of these fields to the strips to the right.

360° Link

The SSL 360° Link plug-in (a wrapper that mirrors third-party VSTs into the 360° surface) is recognised natively. When the focused track has a 360° Link instance pointing at a learned plug-in, SSL Strip Mode / UF8 Plug-in Mode drive the linked plug-in transparently.

User-renamed 360° Link instances show the rename instead of the generic “Link” / “L-BC” abbreviation.

Favourites (Channel Strip and Bus Compressor)

Favourites pane — the Channel Strip and Bus Compressor sets are stored and switched separately.

Swap the active Channel-Strip or Bus-Compressor plug-in on a track for a different one in place, carrying the values of every shared control across. Use it to audition the same EQ / dynamics moves through different emulations (SSL 4K E / G / B, API, bx, a JSFX strip…) without re-dialling anything.

Two domains

Channel Strip and Bus Compressor favourites are entirely separate: eight slots each, their own set libraries, their own preferences. A track can carry one of each.

Most actions come in three flavours — an explicit CS one, an explicit BC one, and a Focused Domain one that follows whichever of the two you are working on at the time. Bind the Focused Domain versions if you want one button that does the right thing on both; bind the explicit ones if you want a button that always means Channel Strip.

Requirement — the plug-ins must be mapped

Favourite switching works through the UC1 / SSL-Link control map: it finds the active Channel Strip on a track, and transfers values, by the shared control each parameter is mapped to (the same control you would map in FX Learn). So every channel strip you switch between must be recognised by Rea-Sixty:

• The built-in maps (SSL CS 2, 4K B / E / G, BC 2, 360 Link) work out of the box — nothing to set up.
• Any other strip (API, bx, a JSFX strip…) needs a Channel-Strip FX-Learn map with its controls assigned to the UC1 knobs / buttons (Settings → FX Learn, or learn from the Learn-HUD). That map is what tells Rea-Sixty which parameter shares each control.

Without a map: a track whose active plug-in isn’t a recognised Channel Strip is skipped (treated as having no CS), and value transfer to / from an unmapped favourite can only fall back to matching by parameter name — so map your favourites for reliable, value-accurate switching.

Setting favourites

Settings → Favourites is the main place. Each domain has eight numbered slots, and each slot is a searchable dropdown over your mapped plug-ins. One plug-in occupies one slot — putting it in a new slot moves it out of the old one.

Two shortcuts exist for favouriting whatever is in front of you:

• Settings → FX Learn, with the plug-in’s editor open: a CS Favourite: or BC Favourite: dropdown assigns it to a slot.
• Learn-HUD, from its menu — favourite the live plug-in directly.

Both of those edit the base bank, not a named set.

Sets, and the Base bank

Eight slots is not many once you work across genres, so favourites can be grouped into named sets — a full bank of eight, saved under a name. Drums might want one set of strips, vocals another.

In Settings → Favourites the set library is split into two columns, Channel Strip sets and Bus Compressor sets, because the libraries are separate. New creates a set, Dup copies the one you are looking at, Del removes it. A set can be renamed in the field beside those buttons.

Sets are assigned per track, under Assign sets to selected tracks: select tracks, then pick a CS set and a BC set for them. Each track can hold one of each, independently.

A track with no set assigned uses the Base bank — the fallback everything starts on. Base is normally global and shared by every project. Ticking This project uses its own Favourites gives the current project its own base bank instead, seeded from the global one, so a project can carry a specific selection without disturbing your usual setup. The dropdown label tells you which you are editing: Base (global) or Base (this project).

When a track is assigned a set, that set is the whole story: an empty slot in it stays empty rather than falling back to Base.

Set libraries and the global base bank are stored with Rea-Sixty and shared by all projects. Per-track assignments, the per-project bank, and the remembered values of each favourite live in the project file.

Copy values, or own settings

There are two ways a swap can behave, and it is worth understanding the difference because it is the heart of the feature.

Copy values carries the live settings from the outgoing plug-in onto the incoming one. You keep the sound you have and change the flavour of the box producing it.

Own settings does the opposite: each favourite remembers what it was last set to on that channel, and switching restores that. The plug-in comes back as you left it.

The two domains default differently, and deliberately so:

Domain	Default	Toggle in Settings → Favourites
Channel Strip	Copy values	Channel Strip: use own settings (vs copy values)
Bus Compressor	Own settings	Bus Compressor: use own settings (vs copy values)

Carrying live EQ and dynamics onto the next strip is usually what you want; a bus compressor is more often a thing with its own character you return to. Both are toggleable, from Settings or from a bound action — CS Favourite Copy/Own, BC Favourite Copy/Own, or the domain-following Favourite Copy/Own (Focused Domain).

The setting governs Switch and Cycle. Copy to Favourite N, below, always copies — that is its purpose.

Switching, copying, cycling

Three things you can do with a favourite, each available for CS, for BC, and for the focused domain:

• Switch to CS Favourite 1 … 8 — replace the active plug-in with favourite N. The button lights when the focused plug-in already is that favourite.
• Copy to CS Favourite 1 … 8 — the A/B, described below.
• CS Favourite Cycle — step through the favourites. Bound to an encoder it steps per detent; there is also Encoder Mode → CS Cycle (Favourites) to give a channel encoder that job outright.

Cycling starts from wherever the track already sits: if its plug-in is favourite 3, the next detent goes to 4. If its plug-in is not a favourite at all, the first forward step lands on the first favourite. Empty slots are skipped, and whether it wraps at the ends follows the global cycle-wrap setting.

A track with no plug-in in that domain is skipped. The swap preserves the old plug-in’s bypass state, and if its window was open the new one opens the same way.

Copy to Favourite N — the A/B

Switch replaces the plug-in. Copy does not: it inserts favourite N directly below the current one, carries the settings onto it, and bypasses the original.

You end up with both strips on the track, same settings, one active — so you can flip between them by toggling bypass, and keep the original to go back to. Copy always carries values, whatever the copy/own setting says.

Which sections carry

On the Channel Strip you can restrict what a swap carries. Settings → Favourites, under Copy sections (copy mode only): — four checkboxes, all on by default:

Box	Covers
EQ	The EQ bands, and the filters, which ride with the EQ on an SSL strip
Dyn	Compressor and the sidechain listen
Gate	Gate and expander
Fader	The strip’s fader level

Anything outside those — input trim, polarity — always carries. The mask applies to Switch, Cycle and Copy alike. The Bus Compressor has no mask; it is a single block of eight controls with nothing to divide.

Favourites remember non-copied sections (on by default) keeps the parts you did not carry. Switch away with Gate unticked and back again, and the gate returns as it was rather than as the plug-in’s default. This also covers parameters that are unique to a plug-in and have no equivalent anywhere else — the odd character control that only one emulation has — which are remembered per favourite and restored when you come back to it.

Value transfer

Each control carries its value to the matching control on the new plug-in, matched by the shared SSL-Link control (the same control you would map in FX-Learn) — never by guessing:

• Numeric values (gains, frequencies, Q, threshold, ratio, time) transfer by engineering value: the search lands the new plug-in on the value whose display matches the source, exactly when achievable. Hz↔kHz and s↔ms scale differences are reconciled automatically; dB / ratio are never rescaled.
• Same-family swaps (e.g. SSL → SSL) stay bit-exact.
• Discrete states / buttons (Bell/Shelf, In/Out, Gate/Expander…) transfer by meaning: identical label first, else the active/inactive sense (In/On/Engaged/Expander ↔ Out/Off/Bypass/Gate), else the same state position — so a toggle lands correctly even when the two plug-ins label or order it differently.
• A control the new plug-in lacks is remembered, so the value survives a round-trip through a simpler strip and is restored when you cycle back.
• The SSL routing order and the EXT FUNCS carry too — the EQ / filter / dynamics arrangement and the free function assignments follow the swap, matched by what each control is, so they survive a move between different strips whose internals are numbered differently.
• A filter parked fully open lands on the destination’s own “out” position where it has one, rather than arriving as a real 20 kHz.

Copy only mapped parameters (Settings → Favourites, on by default) decides how far the matching goes. On, only parameters mapped to a control carry. Off, Rea-Sixty also matches unmapped parameters by name — which can be useful for an unmapped strip, but can also drag across things you did not mean, such as an auto-makeup-gain control that happens to be named like a makeup gain.

If a value genuinely can’t be represented (a frequency far outside the target’s range), the control is left at its default rather than slammed to a rail.

Several tracks at once

Switch, Copy and Cycle act on every selected track, in a single undo step — or on the surface-focused track when nothing is selected.

When the selected tracks carry different sets, Multi-select: unify sets to focused track (on by default) re-assigns them all to the focused track’s set so they end up consistent. Turn it off and each track keeps its own set, switching within it.

On the surface

Two factory soft-key banks exist, CS Favourites and BC Favourites, each filling eight keys with that domain’s Switch actions. The key labels show each favourite’s plug-in short name — resolved through the focused track’s assigned set — falling back to CS Fav N when a slot is empty.

Cycling on the UC1 shows the same previous / current / next carousel the FX and Instance cycles use, headed with the track name, so you can see what you are stepping into. At the ends of a non-wrapping cycle it still shows, sitting on the current favourite.

Solo / Mute modifier modes

The UF8 strip Solo / Cut buttons and the UC1 Solo / Cut buttons normally toggle the track’s solo or mute. Hold a modifier on your computer keyboard while pressing the button to invoke REAPER’s other solo / mute modes instead — the same modes you get from right-clicking a track’s solo or mute button in REAPER.

The modifier follows REAPER’s own convention: on macOS the Command key (⌘) is the “Ctrl” role (what REAPER’s solo / mute menus show); on Windows it is Ctrl. Option/Alt and Shift are the same on both. Windows AltGr counts as Alt.

Hold while pressing Solo	Action
(nothing)	Solo in place (normal)
Alt	Solo, ignoring routing
Cmd / Ctrl	Unsolo all tracks
Cmd / Ctrl + Alt	Exclusive solo (this track only)
Cmd / Ctrl + Shift	Toggle solo defeat

Hold while pressing Cut / Mute	Action
(nothing)	Mute (normal)
Alt	Mute all other tracks
Cmd / Ctrl	Unmute all tracks
Cmd / Ctrl + Alt	Exclusive mute (this track only)

Without a modifier the buttons behave exactly as before. In routing or Plug-in modes — where Solo / Cut already act on a send or a plug-in parameter — the modifiers do not apply; they only affect the plain track solo / mute.

Send and Receive views

A routing view repurposes the eight UF8 strips so they drive sends or receives instead of tracks. This is a UF8 feature; the UC1 has no routing view.

Two layouts

There are two ways to spread routing across the strips, and they are opposites.

“8 sends of focused track” puts the focused track’s send list across the eight strips — strip 1 is its first send, strip 2 its second, and so on. Use this to ride one track’s sends.

“Send N ↦ all tracks” keeps every strip on its own banked track and shows that track’s send number N. Send 3 ↦ all tracks gives you send slot 3 of each of the eight banked tracks. Use this to ride one bus across the whole bank.

Receives work the same way in both layouts.

Turning a view on

Routing views are surface functions bound to hardware buttons — they are not in REAPER’s Action list, so they cannot be triggered from a keyboard shortcut.

Every routing function is a toggle: pressing the active one again turns it off. Each binding also chooses which control owns the route — the faders or the V-Pots. In the binding editor this is the Flip checkbox.

Factory defaults:

Control	Function
SEND / PLUGIN 1..8	Send N ↦ all tracks on the faders
Shift + SEND / PLUGIN 1..8	Receive N ↦ all tracks on the faders
Long-press FLIP	8 sends of focused track on the V-Pots
Shift + long-press FLIP	8 receives of focused track on the V-Pots
CHANNEL	Home — clears every routing toggle and returns the strips to track volume and pan

Because faders and V-Pots hold their routing independently, a send view and a receive view can be live at the same time on different controls — sends on the faders while receives sit on the V-Pots, for instance. Two routing modes cannot share one control. When both are active, the fader’s route wins for Solo, Cut and the scribble text; the V-Pot’s route drives the colour bar.

The view follows the focused track live.

What the controls do

Control	With the route on the faders	With the route on the V-Pots
Fader	Send/receive volume; with FLIP, pan	Track volume, as normal
V-Pot	Send/receive pan (regardless of the PAN button)	Send/receive volume; pan while PAN is engaged
V-Pot push	Centre the send pan	Reset volume to 0 dB, or centre pan when PAN is engaged
Solo	Solo this send (see below)	Solo this send
Cut	Mute this send or receive	Mute this send or receive
Sel	Selects the banked track, not the send	Same

Sel is deliberately not routing-aware — it still selects the track sitting on that strip, so you can change focus without leaving the view.

On the scribble strips the upper line shows the route’s name — the destination track for a send, the source track for a receive, abbreviated to fit. The value line shows the send’s pan. The colour bar takes the colour of the other end of the route, so a strip’s colour tells you where the signal is going, not where it came from.

Paging a long send list

In the “of focused track” layouts, BANK ← / BANK → page the send list by eight instead of scrolling tracks. A track with twenty sends pages through them eight at a time; the window clamps so the last send never scrolls past the right-hand strip. The single-step bank bindings page by one.

In the ”↦ all tracks” layouts the strips are tracks, so BANK ← / BANK → scroll tracks exactly as they normally do.

The page resets to the start when you press Home, when you switch routing mode, and whenever the focused track changes. Nothing on the surface indicates which page you are on, so if a long send list looks wrong, press Home and start again.

Hardware outputs

In a Send view, the track’s hardware outputs share the slot list with its track sends, in the same order REAPER’s mixer send list shows them. Each has its own fader and pan, and is named after the output channel your audio device reports — for example Analog 1 / Analog 2. Long names are abbreviated to fit the scribble strip.

Hardware outputs have no far-end track, so those strips do not take a routed colour.

Receives have no hardware-output equivalent; a Receive view lists receives only.

Empty slots

REAPER lets a send list contain gaps. An empty slot shows as a completely blank strip — no name, no value, colour bar off, V-Pot ring off, and the motor fader parked at the bottom so a gap is obvious at a glance. Buttons and faders on a blank strip do nothing.

Strips past the end of a short list are blank in the same way: a track with four sends fills strips 1–4 and blanks 5–8.

Solo and Cut on a send

Cut toggles the send’s or receive’s own mute.

Solo is an exclusive un-mute: it un-mutes the send you pressed and mutes every other one in the list. In a Send view that includes the hardware outputs; in a Receive view it stays within the receives. Pressing it again un-mutes everything.

This discards whatever mute pattern you had before — the same as the solo button on a console. If you had three sends deliberately muted, soloing and un-soloing leaves all of them open.

While any routing view is active the Solo LEDs stay dark, so there is no lit button telling you a send is soloed. The visible cue is the other strips’ Cut LEDs coming on. Leaving the view restores the LEDs to the tracks’ real solo states.

Writing automation

Moving a fader in a routing view writes the send’s volume — and its pan under FLIP — through the same path REAPER uses when you drag the control with the mouse. Whether the move is recorded is therefore REAPER’s decision and follows the track’s automation mode, exactly as it would on screen. Releasing the fader ends the edit.

Two limits are worth knowing:

• The V-Pot writes pan automation, but V-Pot volume changes the level without recording. If you want an automated send-level move, use the fader.
• A send whose level is already automated reads its written value only after you have touched its fader once in the session. Before that the strip shows and parks at the underlying trim level. Touch the fader and it corrects itself.

If you add or delete a send on a track that already has send automation, a fader move may change the level without recording it. Leaving the routing view and re-entering it re-establishes the link.

REC + RME (TotalReaper) integration

Modes → REC — mapping the RME preamp controls (gain, 48 V, pad, phase) onto UF8 and UC1.

Requires the TotalReaper extension (separate ReaPack package, same repository as Rea-Sixty) and an RME interface supporting TotalMix FX 2.1 Global OSC. Settings → Modes → REC says whether it was detected and offers a button to fetch it through ReaPack when it is not.

Master switch: Settings → Modes → REC → “Enable RME / TotalReaper integration”.

What has to be in place first

Three things stand between a knob on the surface and a preamp in the interface. Rea-Sixty runs a TotalReaper action, TotalReaper talks to TotalMix over the network, and TotalMix drives the hardware. Each part has to be set up, and none of them tells the other two when it is not.

TotalMix FX 2.1 or later, with Global OSC. Global OSC is the protocol everything here rests on and it arrived with 2.1. RME’s ordinary downloads page still lists 2.03 at the time of writing; 2.1 is a public preview, announced at rme-audio.de/totalmix-fx-beta.html, and the build itself sits in the forum thread that page points at.

Switch OSC on in TotalMix. Under Settings, OSC, set Compatibility Mode to Global OSC. Then switch Enable OSC Control on under Options.

Tick “Receive to hidden channels” under Settings, OSC, Details. This is the setting that wastes an evening: with it off, TotalMix quietly ignores anything addressed to a channel that is not in the layout you happen to be looking at, so the integration seems completely dead while every message is in fact arriving. Some TotalMix versions ship with it switched off.

The ports are 7001 and 7002. TotalMix receives on 7001 and answers on 7002, which is what TotalReaper expects out of the box. Change them in TotalMix and you have to set the same two numbers in TotalReaper’s settings window, where they take effect without a restart. Both are ordinary network traffic on your own machine, so a firewall that filters local traffic will stop the integration cold. Rea-Sixty listens on neither: it only asks TotalReaper to act.

TotalReaper 0.2.2 or later. Point a track at a different input on an older version and the gain, 48V, pad and phase you read on the surface keep describing the input you left, until something on the new one moves. Settings, Modes, REC says whether TotalReaper was found and offers a button that fetches it through ReaPack.

A quick check that the chain is alive, before you go looking at Rea-Sixty: select a track recording from a mic input, run TotalReaper’s own 48V action from the action list, and watch the strip in TotalMix. If that does nothing, the problem is behind TotalReaper, not in front of it.

The three surfaces have separate assignments in that tab, so you can opt one in without the others. What follows describes the UF8 strips; the UC1 uses Encoder 2, Cut, Solo and Polarity on the focused track, and the UF1 uses the V-Pot above the fader, Cut and Solo on the channel its fader side is showing.

When on AND REC / REC+MON selection mode is active:

• V-Pot rotation → preamp gain ±1 dB (configurable per V-Pot rotation → Preamp gain ±1 dB toggle)
• V-Pot rotation + Shift → input channel reassignment (configurable per V-Pot rotation + Shift → Change input channel toggle)
• V-Pot push → action of choice (None / 48V / Pad / Phase invert / AutoLevel)
• Cut button → action of choice (same enum)
• Solo button → action of choice
• Polarity (if mapped) → action of choice

The channel-strip type cell shows the input channel name (“Mic 1”, “Line 3”) instead of the CS variant label, and the V-Pot readout bar shows the preamp gain instead of pan, since that is what the knob above it is turning. Full scale is +75 dB, which is as far as RME pres usually go.

Hardware inputs only — MIDI / multichannel inputs leave the original label intact.

If TotalReaper isn’t installed, the integration does nothing at all and every key keeps its normal behaviour, so turning the mode on can never leave a control dead.

The UF1 reads out exactly as a UF8 strip does, down to the same zones: flags on the left of the value line, gain on the right, the readout bar on the gain, and the type cell naming the input. A track TotalReaper has not reported anything about keeps its usual readout instead. Cut and Solo light from the TotalMix state they switch rather than from the track’s mute and solo.

With the UF1 in Extender mode this all keeps working on the channel the fader side shows, in a send view as well: a send has no preamp, so the preamp actions take that side’s Cut and Solo while the mode is engaged.

DynaMount mode

Modes → Dynamount — up to eight robotic mic stands; only the defined mounts become DynaMount strips.

DynaMount makes robotic microphone stands. In DynaMount mode the UF8 strips drive up to eight of them over your network — move a mic from the control room, with the fader.

Setting the mounts up

Settings → Modes → Dynamount. Each of the eight rows is one stand:

Column	What it is
On	Include this mount. Only enabled mounts take a strip.
Name	Shown on the scribble strip
IP address	The mount’s address on your network — you type it; there is no discovery
Colour	The strip’s colour bar
Detect	Check whether that address answers
Calibrate	The Home button (below)
Status	Gen1, Gen2, offline, or -- when the row is off

Fill from left / Fill from right decides which end of the surface the mounts occupy.

Engaging the mode

Bind Selection Mode → DynaMount to a button; it toggles like every other Selection Mode. There is no switch in Settings — the Dynamount tab configures the stands, it does not turn the mode on.

With no mounts enabled the mode does nothing at all, and every strip stays a track.

Enabled mounts pin to one end of the surface and carry no track. The other strips remain ordinary track strips, and the tracks that would have sat under the mounts shift onto them rather than disappearing.

Driving a mount

Control	Axis
Fader	X — left and right
Fader with FLIP	Y — distance, fader up = nearest
V-Pot	R — rotation, 0–180°

The fader sends when you let go, not while you move it: the readout follows your hand, the stand moves once on release. The V-Pot behaves similarly — the number changes per detent, but the mount only turns about a second after you stop.

The scribble strip shows the mount’s name (or MOUNT if you have not named it), DYNA in the type zone, and the live position as X, Y and R. The digit is the mount’s row number in Settings, not the strip number. A mount that is not answering has OFF appended to its value line.

Solo, Cut and Sel have no function on a mount strip and their LEDs stay dark.

Home

Home — the button under Calibrate — drives the mount to the reference pose X50 Y0 R90: centred, nearest, straight ahead. It also resets Rea-Sixty’s idea of where the stand is.

This matters because the protocol is one-way: the stands report no position, so Rea-Sixty knows only what it last told them. Positions are remembered globally and restored on the next launch without re-driving the motors, on the assumption that nothing moved in between. If you move a stand with the DynaMount app, by hand, or after a power cut, the two disagree — press Home and they match again.

Home is a normal move command, so the stand travels to that pose; it is not a hardware homing or self-calibration routine.

Connection

Rea-Sixty talks to the stands over plain HTTP on your local network, at the addresses you enter. Motor speed is fixed.

Detect is a reachability check for an address you have already typed, not a search of the network. On an address with nothing at the other end it can take around six seconds to give up and report offline.

Once a mount has been found offline, Rea-Sixty stops trying it. Faders and V-Pots keep moving the numbers on screen, but the stand will not follow, and the value line shows OFF. Press Detect again after fixing the network — or edit the address, or restart REAPER. It will not recover on its own.

Every enabled mount is probed once when REAPER starts, so Status is filled in before you open Settings.

Only first-generation stands can be driven. A newer stand is detected and reports Gen2 in Status, but Rea-Sixty cannot move it — motion is implemented for the Gen1 HTTP protocol only.

Hue mode

Philips Hue lamps on the strips. In Hue mode the UF8 faders are brightness, the V-Pots are colour, and the UF1 puts one lamp on its channel screen. Scenes go on any key you like, and the room can go red while you record.

Connecting the bridge

Settings → Modes → Hue.

1. Find bridge asks Philips where your bridge is. That needs an internet connection; if there is none, or the bridge is on a network the lookup cannot see, type the address into the IP field yourself.
2. Press Pair (press link button), then walk over and press the round button on top of the bridge. You have thirty seconds. The status line counts down.
3. Refresh lights + scenes re-reads everything. Rea-Sixty does that by itself every two seconds while it is connected, so you only need this after adding a lamp.
4. Forget drops the address and the key. Pairing again is the only way back.

The status line reads green when everything is talking, amber while it is pairing or reading, and red when the bridge stopped answering. A bridge that drops off is retried every ten seconds on its own.

About the certificate. The Hue bridge only speaks over an encrypted connection, and it signs that connection itself rather than with a certificate your computer already trusts. Rea-Sixty therefore does not check the certificate for your bridge, and for your bridge only. Instead it remembers the bridge’s own serial number when you pair and compares it every time it reconnects: if something else answers at that address, Hue mode goes offline and says so rather than talking to it.

Setting the lamps up

Eight rows, one per strip:

Column	What it is
On	Include this lamp. Only enabled rows take a strip.
Label	Shown on the scribble strip, seven characters
Target	A single lamp, or a whole room or zone
Kind	lamp or zone, filled in for you
Bar	The strip’s colour bar when the lamp is off
Rec light	Include this row in the recording light
State	What the lamp is doing right now

Fill from left / Fill from right decides which end of the surface the lamps occupy, exactly as in DynaMount mode.

A room or zone appears in the list only if it has lamps in it. An empty room cannot be dimmed, so there is nothing to offer.

Why the Kind column is there. A single lamp accepts about ten changes a second. A whole room accepts about one, because the bridge sends a room change out as a broadcast over its radio network, and that is far more expensive. Rea-Sixty holds to those limits: a lamp on a fader feels immediate, a room feels like it is following you. That is the bridge, not the surface.

Engaging the mode

Bind Selection Mode → Hue to a button. It toggles like every other Selection Mode, and there is no switch in Settings: the Hue tab configures the lamps, it does not turn the mode on.

With no lamps enabled the mode does nothing and every strip stays a track. Enabled lamps pin to one end of the surface, and the tracks that would have sat under them shift onto the remaining strips rather than disappearing.

Driving a lamp from the UF8

Control	What it does
Fader	Brightness. At the very bottom the lamp switches off.
V-Pot	Hue by default
V-Pot with FLIP	Saturation by default
V-Pot press	Switches between colour and white
CUT	Lamp on and off
SOLO	This lamp stays on, every other Hue strip goes dark
SEL	Makes this the lamp on the UF1 screen

The three V-Pot roles are set under Controls in the Hue tab. You can put colour temperature on either of them, which is what a room of white-only lamps wants.

The scribble strip shows the label, LAMP or ZONE in the type zone, the row number as the digit, brightness in the fader readout, and the full state in the value line. A lamp the bridge cannot reach reads OFFLINE.

The colour bar shows what the lamp is actually showing. When the lamp is off the bar goes dark rather than keeping its last colour.

The bottom of the fader is off, not one percent. The bridge treats a brightness of zero as the dimmest setting it can manage, not as darkness, so switching a lamp off is a separate instruction. Rea-Sixty sends it when the fader reaches the last one percent of its travel. If you would rather the fader never switched anything off, turn off bottom of travel switches the lamp off under Controls.

Driving a lamp from the UF1

Bind UF1 Mode: Hue to any key on any surface. The UF1 then shows one lamp: whichever one you last pressed SEL on, or turn the CHANNEL encoder to walk through them.

Control	What it does
Fader	Brightness
V-Pot 1	Hue
V-Pot 2	Saturation
V-Pot 3	Colour temperature
CHANNEL encoder	Picks the lamp
V-Pot 1 press	Switches between colour and white
CUT	Lamp on and off
SOLO	Light solo

The UF1’s three colour pots are fixed: three axes on three knobs needs no setting. The fourth is blank, because there is no fourth thing for it to be.

The lamp itself is on the CHANNEL encoder, where “which channel am I on” already lives.

You leave the mode with the key you came in on: UF1 Mode: Hue is a toggle.

Scenes

Eight slots under Scenes in the Hue tab. Each one points at a scene on your bridge, with a short label for the display and a colour for the key LED.

There are two ways to reach them.

One key per scene. Bind Hue: recall scene with parameter 1 to 8 to any key on any surface. A short press puts the room into that scene. A long press starts it moving, for the scenes that cycle.

All eight at once. Set a soft-key bank’s type to Hue Scenes: on the UF8 that is the Sub-Bank’s Dynamic setting under Settings, Bindings; on the UF1 the same setting on one of its ten soft-key banks. The bank then shows the eight slots in order, each key wearing its slot’s LED colour and lighting while the bridge reports that scene as the one showing. Push recalls, long press starts it moving, exactly as the action does. On the UF1 the bank names itself HUE on the time field, and a recall flashes the scene’s name there.

Both routes read the same eight slots, so there is one list to keep.

Two more actions come with it:

• Hue: all lamps off switches off every enabled lamp at once.
• Hue: recording light on / off arms or disarms the recording light without opening Settings, and lights up while it is armed.

Recording light

The classic red light, only real. Under Recording light:

• Applies to is either the rows you ticked under Rec light in the lamp table, or a whole room or zone. The two are separate on purpose: the lamp you ride on a fader is rarely the one that should go red.
• While recording sets the colour and the brightness. Test holds it on so you can walk into the room and look at it; press it again to release.
• When it stops either puts the lamps back exactly the way they were, or recalls a scene of your choosing.

Only recording touches the lights. Play and stop leave them alone. If they did not, every scene you recalled by hand would be wiped the moment you pressed the space bar.

The state of every affected lamp is read just before the light goes red and written back afterwards, lamp by lamp, so a room whose lamps sat on different colours comes back the way it was rather than flattened to one.

Hue mode does not have to be engaged for this. The recording light works whether the strips are showing lamps or tracks.

Marker cues

Name a marker hue:Relax and the scene called Relax is recalled when the playhead passes it.

The prefix is yours to change, and the transition time is how long the room takes to arrive. Under the settings is a live list of every matching marker in the project, with the scene each one resolves to, or a red note if there is no scene by that name. Check it before the take rather than during it.

Cues fire only while the transport is rolling, and only forwards. Dragging the cursor back past three cues fires nothing, and a stopped edit cursor fires nothing at all: the marker names a moment in the take, not a place on the ruler.

What this does not do

Rea-Sixty talks to the bridge the ordinary way, which is fast enough for a fader and a scene but not for music. There is no meter-driven lighting and no lamp that flickers with the kick drum. That needs the streaming connection Philips built for televisions and games, which needs a piece of encryption software Rea-Sixty deliberately does not ship.

Stream Deck and Companion

Rea-Sixty carries a small server — the bridge — that external control apps talk to. Two clients use it: an official Stream Deck plugin, and a community Bitfocus Companion module. Both let you fire any Rea-Sixty action from a button and read live meters back.

Neither is part of the ReaPack package.

The Stream Deck plugin

Download com.reasixty.companion.streamDeckPlugin from the Assets of any release and double-click it — the Stream Deck app installs it. There is nothing else to install and nothing to configure; no Node, no separate server. You need the Stream Deck app 6.5 or newer.

The tiles then appear in the Stream Deck action list under Rea-Sixty Companion. Drag one onto a key.

Nine tile types:

Tile	What it fires
Favourite	Switch and cycle CS / BC favourites
Layer	Select binding layer 1 / 2 / 3
Hardware Mode	Surface-wide toggles — Flip, Home, Settings, mirrors, overlays, learn
Navigation	Bank and page navigation, zoom
Plug-in	FX windows, chain, close-all, Quick-Learn, bypass, offline
Selection Set	Recall selection sets
Surface Target	What the surface drives — Selection and Encoder modes, sends, Parameter Groups, soft-key banks, SSL
Any Rea-Sixty Action	Any built-in at all, or a raw REAPER command
Meter	A live readout rather than a button (below)

Each tile’s action list is pulled live from the running extension, so it always matches your installed version rather than a list baked into the plugin. The consequence is that the list is empty until REAPER is up — the property panel then reads “Rea-Sixty not connected — start REAPER with the extension.”

Keys ship blank: no image, no title. Set a Title, or tick Show track to mirror the selected track’s name.

The Meter tile shows five sources — Peak, Gain Reduction, Gain Reduction — Bus Comp, Peak + GR, and Peak + GR (Bus Comp). Gain Reduction reads the first plug-in on the track that reports it, so any compressor works; the Bus Comp variants target the mapped SSL Bus Compressor.

Point it at the Selected track, the Master track, a fixed Track number… or a Track name…. The rest of the options are presentation: Track name and Track colour to show them, Name position (Bottom or Top — top reads better on an angled deck), Wrap name for a second line, and Font size (Small / Normal / Large / Extra large).

Smart abbrev. is on by default and shortens long track names intelligently. Note that it overrides the global Track-name mode rather than following it: with the box ticked you get smart abbreviation even if the surface itself is set to plain truncation, and unticking it shows the full, unshortened name.

A meter tile can also fire an action when pressed — see On press (optional).

The bridge

The bridge listens on port 49900, on loopback only — so out of the box, only the machine running REAPER can reach it.

To let Companion on another machine connect, open it to the network by running this once in REAPER’s ReaScript console and restarting REAPER:

reaper.SetExtState("rea_sixty", "sd_bridge_bind", "lan", true)

The port can be moved the same way with sd_bridge_port. Both settings are read once when the extension loads, so a restart is required either way.

The bridge has no authentication. In LAN mode anyone who can reach the port can drive REAPER. Only open it on a network you trust.

Two limitations of the Stream Deck plugin are worth knowing before you plan a setup:

• It always connects to 127.0.0.1 on port 49900. There is no host or port setting. So the Stream Deck plugin works on the machine running REAPER only — the LAN option above is useful for Companion, not for it.
• Moving the port with sd_bridge_port therefore disconnects the Stream Deck plugin permanently. Only change the port if Companion is your only client, or if something else on the machine already occupies 49900.

If the port cannot be claimed at all, the bridge fails quietly and everything else keeps working — the only evidence is a StreamDeck bridge FAILED to bind line in the log.

The Companion module

Community module, provided as-is. It is not officially supported, and it is not a one-to-one port of the Stream Deck plugin: Companion styles buttons through feedbacks rather than pre-made tiles, and some conveniences — metering a track by name, for one — are not implemented. The source is in the repository for anyone who wants to extend it.

It needs Bitfocus Companion 4.x and is installed as a developer module: run npm install inside companion/, then point Companion’s Developer modules path at the directory containing that folder and restart the launcher. Rea-Sixty then appears under Connections → Add connection.

Do not point the developer path at a symlink. Companion runs developer modules under Node’s permission model, which refuses to read through one. The connection dies at startup with nothing but Error: Restart forced in the log — the real reason only appears at debug log level. Use a real directory.

The connection is configured with a REAPER host and Bridge port, plus which tracks to meter: the selected track, the master, and a comma-separated list of track numbers. Metering is off until you enable it there, and each metered track is polled about fifteen times a second — so list only what you need.

It provides an action for any Rea-Sixty built-in (the list again pulled live), plus REAPER commands by numeric ID or by action string. Feedbacks cover the active binding layer, flip state, a meter-over-threshold test with a configurable dB threshold, and a graphical meter bar. Variables expose the connection state, selected track name and number, active layer, flip, and per-track peak and gain-reduction values. Presets ship grouped by category, with a Meters group and a Status group.

If the keys go dead

Both clients reconnect by themselves roughly every one and a half seconds, so starting REAPER after the Stream Deck app is fine — the keys come to life on their own, and nothing needs reinstalling.

While the bridge is unreachable, meter keys show a dim dash and no REAPER rather than freezing on their last reading, and any track name shown on a key clears. That display is the diagnosis: REAPER is closed, the extension is not loaded, or something else has taken the port.

Master track

The REAPER Master bus isn’t a normal track — it’s excluded from banking and has no track number. Rea-Sixty surfaces it in four places. A Channel Strip on the Master is treated exactly like one on any track (it drops into SSL Strip Mode automatically), and its scribble reads MASTER.

On the UC1

• Bus Compressor on the Master — a BC plug-in inserted on the Master always shows in the UC1’s Bus Comp context, sitting at the far left of the BC carousel (the Master is “track 0”). It also becomes the default BC anchor when no other track carries a BC. This is always on; it does not depend on the Show Master as Track 0 toggle.
• Show Master as Track 0 on UC1 (Settings → Behaviour → Master track) — with this on, rotating the CHANNEL encoder left past track 1 lands on the Master, so the channel-strip section drives the Master bus. Rotate right to return to track 1. UC1-only.
• Out-Gain → Master fader — when the UC1 is focused on the Master and there is no Channel Strip on it, the Out-Gain knob automatically drives REAPER’s Master fader (readout reads Mst Vol). No toggle needed — if there’s no CS Fader-Level parameter to ride, the knob falls back to master volume. (With a CS on the Master, Out-Gain rides the CS Fader Level as usual; the global UC1 Out-Gain → REAPER fader toggle still forces track volume on any track.)

On the UF8

Two bindable actions pin the Master onto a physical UF8 strip — fader, V-Pot (pan), Solo/Cut/Sel LEDs, colour bar and the MASTER scribble all follow the Master bus:

• Pin Master to UF8 Strip 1
• Pin Master to UF8 Strip 8

Each is a toggle (press again to un-pin; pinning the other strip switches directly). Both are bindable from the Bindings picker (category Master) and exposed as REAPER actions Rea-Sixty: Pin Master to UF8 Strip 1 / 8 for the keyboard / toolbar — handy on the UC1, which has no spare buttons.

The Pinned Master combo (Settings → Behaviour → Master track) chooses the layout:

• Replace strip (default) — the pinned strip becomes the Master and hides the track that was banked there.
• Shift banking — the regular tracks bank over the remaining 7 strips so none is hidden; the bank step and clamp drop to 7 while a pin is live.

The pin is a normal-mode feature: it steps aside automatically when a Selection Set, AUTO selection mode, a Send/Receive routing mode, or UF8 Plug-in Mode is active (all of which repurpose the strips), and resumes when you leave them. The Master wins over a TCP-pinned track on the same strip. The pin is not persisted across REAPER restarts.

Selection Sets

Active set as a track filter

When a slot is active, the visible track list is filtered to the slot’s tracks. Filter is ANDed with Folder Mode / Show Only Selected so they compose naturally.

Group slots

A Group slot tracks REAPER’s track-group membership in real time. Add a track to group N in REAPER → it appears in the surface; remove it → it disappears, without a re-recall.

Auto-mode interaction

Selection-Set auto-mode (Settings → Modes → AUTO) is a single global value: -1 (off) or REAPER’s automation mode index (0..5). When a selset is active in AUTO sel mode + the dropdown is non-off, recalling the slot arms its tracks to that mode. Leaving the slot OR leaving AUTO sel mode reverts those tracks to Trim/Read.

Persistence

Project-scoped Snapshot + Group slots are saved into the project’s RPP chunk via REAPER’s project-config hook (lines SELSET_<N>_DATA "..."). Global-scoped slots ride REAPER’s global ExtState (reaper-extstate.ini). The per-slot global/project flag itself, plus the Selection-Set auto-mode value, also live in global ExtState.

Focus Set

A ninth, ad-hoc set living alongside the 8 numbered slots — no Settings UI, no slot name, just actions you bind to hardware. Unlike the slot Selsets (which filter the visible list), the Focus Set is a pin source: its members stick to the leftmost strips and the rest of the tracks keep banking past them — nothing is hidden. Useful for keeping a working set (“the 6 drum mics + 2 talkbacks”) permanently under your hands while you still scroll the rest of the session.

• Focus Set: add selected — add every REAPER-selected track to the set.
• Focus Set: remove selected — remove every REAPER-selected track.
• Focus Set: pin (toggle) — toggle pinning on / off. Coexists with the 1..8 slot recall — a slot filters the list, the Focus Set pins members within it.
• Focus Set: clear — empty the set in one shot.
• Focus Set: toggle selected — flip membership of the selected tracks (in → out, out → in).
• Focus Set: set from selection — replace the set contents with the current selection.
• Focus Set: pin focused track — add the focused track and turn pinning on in one step.
• Encoder: scroll Focus Set members (encoder) — step REAPER track selection through the set in project order.

The last four also have REAPER-action equivalents (REASIXTY_FOCUS_CLEAR / _TOGGLE_SELECTED / _SET_FROM_SELECTION / _PIN_FOCUSED) for a keyboard shortcut or toolbar button.

Collisions. Focus pins, REAPER TCP pins (B_TCPPIN) and a Master pin compose left-to-right: [Master][pin head: TCP ∪ Focus][banked rest]. Focus pins work in both TCP and MCP surface-mirror modes; TCP pins only in TCP mode, and only while REAPER is honouring them (the Override/unpin and Show/hide all pinned tracks in TCP actions stand the TCP pins down — Focus pins are unaffected).

Auto-mode. A dedicated Focus-Set Auto-Mode dropdown (Settings → Modes → AUTO) arms members to a chosen automation mode when pinned in AUTO sel mode — decoupled from the slot Selset auto-mode. Members are exempt from the Auto-hide Trim/Read filter, so a pinned member stays visible even when unarmed.

Persists per-project (saved into the RPP via the same project-config hook the numbered slots use).

Parameter Groups

Eight slots + a per-slot member list of REAPER tracks. The Active group’s members all receive the same parameter edit when you twist a UF8 V-Pot, a UC1 knob, or move a fader on any one of them.

Slot management UI in Settings → Parameter Groups. Each slot:

• Name
• Member tracks (Add Selection, Remove, Clear)

Active group switch via the per-slot Active radio.

Temp-group mode: when Multi-Select acts as Temp Group is on, the active group is derived live from the current REAPER multi-track selection.

Which edits travel — and onto which tracks:

• SSL Channel Strip / Bus Comp (and learned FX): the edit follows the surface control, so it lands on the matching control even when members run a different variant of the plug-in (e.g. one track on Channel Strip 2, another on 4K E).
• Any other plug-in — no mapping or FX-Learn required: the edit copies to members that host the exact same plug-in. Tweak a knob (on the hardware or with the mouse on the plug-in GUI) and every member track with an identical plug-in follows along. Members without that plug-in are silently skipped.

This deliberately does not copy across different plug-ins: the same internal value rarely means the same thing on another plug-in, so only identical plug-ins mirror.

Storage: each track’s member-of-which-slots state is a bitmask in P_EXT (P_EXT:rea_sixty:param_groups). Slot metadata is in a project-scoped JSON sidecar.

Mapping Exchange

The Mapping Exchange — plug-ins other people have already taught Rea-Sixty, with the surface each map targets and how much of it the map fills.

A shared library of plug-in maps, reachable from Settings → Exchange. If someone has already taught Rea-Sixty a plug-in you own, you can pull their map instead of learning it again.

Browsing

The landing table lists every plug-in the exchange knows:

Column	Meaning
Plug-in	The plug-in name
Vendor	Its maker
Maps	How many maps exist for it
Surfaces	Which surfaces those maps target (uc1, uf8, uf1)
Coverage	How much of the surface the best map fills

Pick a plug-in and you get its maps, one row each, with the author, the surface, the coverage and a Works column — whether other people report the map working. Open a map and you see exactly what it does before you take it: a Control / Parameter table, an Also mapped list for parameters with no fixed control, the Modifier layers if the author used any, and the EXT FUNCS list for the UC1’s hidden menu.

Taking a map

If you already have a map for that plug-in, Rea-Sixty asks rather than overwriting: Replace mine or Keep mine. Nothing is replaced silently.

Publishing

Server settings holds the server address and a device token. The token is what lets you upload; getting one is a browser round-trip you start from that pane. Without a token you can browse and download — publishing is the only part that needs it.

Bindings

The Bindings tab renders the UF8 + UC1 hardware as schematics. Every button / knob / fader is editable.

Per-binding fields

• Action type: Native / REAPER Action / MIDI Command
• Action name (Native + REAPER Action) / MIDI message (MIDI Command)
• Modifier: None / Shift / Cmd / Ctrl / combinations
• Trigger: Press / Hold / Long-press
• LED override: colour + brightness

Modifier system

The three modifier-key actions (Modifier: Shift / Fine (double-click latches), Modifier: Cmd, Modifier: Ctrl) shift every other button’s binding to that modifier slot while held. Modifier keys themselves are bindable to any physical button.

Double-clicking Shift (= the SSL FINE key) latches it on. Press once more to unlatch.

Modifier slots are per-modifier-combination, so a button can have up to 8 separate bindings.

Long-press

A long-press binding fires after the long-press threshold elapses. The short-press binding fires on release if the threshold wasn’t reached. A button can have both bindings.

Toggle / Hold semantics

• Press: fires once per press edge
• Hold: keeps firing while held (for repeats like bank-shift)
• Long-press: fires once when the long-press threshold elapses

LED override

Every bound button can override its LED colour and brightness, independent of the action’s natural state.

REAPER Action picker

Pick any action from REAPER’s Action List by name or command ID. Supports filtering and ReaScript loading (Load ReaScript button drops a .lua file into the catalog).

Named commands (the ones starting with an underscore) are resolved by name rather than by number, so ReaScripts stay bound when REAPER re-numbers its action list.

MIDI Command bindings

Emit a MIDI message from any button, from any soft-key slot on the UF8 and the UF1, and from any step of an action chain. Four message types: Note On, Note Off, Control Change and Program Change. You set the channel (1 to 16) and the two data bytes, which mean note number and velocity, CC number and value, or a program number, where the second byte is not sent at all.

The message goes to one of REAPER’s own MIDI output devices, picked by name in the editor, or to every one of them at once if you leave the picker on (all enabled outputs). The target is therefore whatever REAPER already talks to, and there is nothing to patch or route afterwards. A device that is currently unplugged still appears, marked (offline), so a binding is not silently lost when you open the editor without that hardware connected.

Because a slot is a chain, one key can send several messages with a gap between them. That is how a unit which wants a bank select before its program change gets both from one press.

If the bound device is no longer in REAPER’s output list, unplugged or renamed, the press does nothing and the reason is written to rea_sixty.log.

Operational modes (track filters)

Folder Mode

Toggle: Toggle Folder Mode (parents only) action. When on, only top-level (depth-0) tracks are visible on the surface. Folder children appear only when “spilled” — long-press a folder parent’s SEL button to toggle that parent’s spill.

Nested folders (ancestor-chain spill). Long-pressing a folder at any depth spills that folder; the ancestor chain stays in the spill set as well, so the intermediate hierarchy remains visible. Collapsing an ancestor (re-long-pressing it) hides its subtree but keeps the descendants’ spill state in memory, so re-spilling that ancestor restores the previous drill-down without having to long-press each level again. Toggling Folder Mode off (or re-pressing the Toggle Folder Mode (parents only) action) clears the spill set entirely.

Show Only Selected

Toggle: Toggle Show Only Selected action. When on, only currently-selected tracks appear on the surface. Live filter — changing REAPER selection updates the surface within one timer tick.

Selection-Set filter

ANDs with Folder Mode / Show Only Selected. When a slot selset is active, only its tracks appear (further filtered by Folder Mode if also on). The Focus Set is not a filter — it is a pin source that coexists with the slot filter (see Selection Sets → Focus Set); it never hides tracks.

Visibility-follow filter

Settings → Behaviour → Tracks → “Surface mirrors: TCP / MCP” (default TCP) — the surface only shows tracks that are visible in the mirrored view, so anything REAPER hides in the TCP (or, in MCP mode, in the Mixer) drops off the surface. In TCP mode that also covers the children of a fully-collapsed folder whenever REAPER’s own “Hide children of collapsed folders” preference is on. ANDs with all other filters.

Auto-hide Trim/Read

Settings → Modes → AUTO → “Hide Trim/Read tracks while in AUTO mode” — within AUTO selection mode only, hides tracks whose automation mode is Off/Trim (0) or Read (1).

Troubleshooting

Try this first. If the surface was working and has stopped — dead faders, no scribble text, buttons ignored — run the REAPER action Rea-Sixty: Restart Rea-Sixty (re-open devices). It closes and re-opens the devices without the Preferences round-trip and clears most wedged states. Give it a keyboard shortcut; a hardware key is no use when the hardware is what stopped responding.

It re-opens the devices, not the extension, so it will not pick up a newly installed build — that still needs REAPER restarted.

Rea-Sixty does not appear in Preferences → Control/OSC/Web → Add

The dylib / dll / so didn’t load. Check:

• macOS Console for codesign / dyld errors.
• Windows Event Viewer → Application for module-load errors.
• Linux: start REAPER from a terminal and watch stderr.

Make sure the runtime libraries are in the same directory as reaper_rea-sixty.{dylib,dll,so} — for Windows this means %APPDATA%\REAPER\UserPlugins\, where the delay-load resolves them at first call.

Surface does not respond / “SSL360Core owns the device”

SSL 360° is running and has claimed the UF8/UC1 vendor interface exclusively. Quit SSL 360° and restart REAPER.

Disconnect after sleep / wake or sustained idle (macOS)

Known issue: both UC1 and UF8 IN endpoints can fail within ~3 ms of each other on a sustained host-side USB stack condition. libusb_reset_device does not escape it. Physical replug (one or both devices) recovers. Diagnostic logs are rea_sixty_uc1_stale.log + rea_sixty_uf8_stale.log in the system temporary folder (see Diagnostics).

Track-colour wrong

• Confirm Settings → Appearance → Surface display → “SEL LED follows REAPER track colour” is on.
• The colour-bar quantiser is HSV polar — subtle RGB differences in REAPER’s colour picker can land on neighbouring palette slots. Pick a more saturated colour if the nearest palette slot looks wrong.

GR meter reads wrong on a third-party compressor

• Enable Settings → Devices → Metering → “GR meter source: Show any GR Data”.
• Confirm the compressor implements the PreSonus VST3 host-side GainReduction_dB config-parm. Plug-ins that don’t expose this will not drive the meter regardless of settings.

Linux port resets / xhci_hcd disabled by hub (EMI?)

Plug UF8 and UC1 into separate PC USB ports. Daisy-chaining UC1 through UF8’s downstream port triggers xhci_hcd port cycling on Linux 6.17.

Settings window doesn’t appear

ReaImGui isn’t installed. Install it via ReaPack. Hardware control still works without it.

Diagnostics

Log files live in the system temporary folder — /tmp on macOS and Linux, %TEMP% on Windows. Settings → About → Logs shows the real path and has a button to open the folder.

• rea_sixty_uc1_stale.log — UC1 device-handle diagnostics
• rea_sixty_uf8_stale.log — UF8 device-handle diagnostics
• macOS Console / Windows Event Viewer / Linux journal for in-process errors

Note that Console output in Settings → About → Logs is off by default, so REAPER’s Console stays quiet. The log files are written either way; turn the checkbox on if you want messages in the Console as well.

Vendor relationship

Not affiliated with Solid State Logic. SSL ACP Support replied to the project author on 2026-05-18 confirming “no objections to the public, open source project” but declined to share protocol documentation.

Protocol stays self-decoded; documented in docs/protocol-notes.md and adjacent capture notes in the repo.

No SSL binaries, firmware, or trademarks are redistributed. “SSL”, “UF8”, “UC1”, “360°” are property of Solid State Logic Ltd.