Canvas Expression reimagines what an expression pedal can be: two independently configurable outputs capable of Expression, Switch, or Control Voltage, plus deep MIDI control over products via ⅛” TRS output and USB-C. Canvas Expression isn’t just another expression pedal. It’s a command center for manipulating parameters that adapts to nearly any pedalboard, synth, or desktop setup.Whether you're sweeping delay repeats, switching presets mid-song, controlling modular synths, or automating plugin parameters inside your DAW, Canvas Expression gives you flexible control without compromise. Configure every output exactly how your rig demands and save yourself from carrying multiple dedicated controllers. Traditional expression pedals do one job. Canvas Expression was designed to do nearly all of them.Dual Independent OutputsEach of its two independent outputs can function as a standard expression output, a programmable switch output, or a control voltage (CV) source, allowing a single pedal to control multiple devices across nearly any setup. Whether you're connecting to pedals, amplifiers, synthesizers, modular systems, or your computer, Canvas Expression adapts to the gear you're using instead of forcing your rig to work around it.Customize Your WayBuilt-in automatic expression wiring detection removes the guesswork of compatibility, while adjustable tapers, sweep direction, switching thresholds, and output behavior let you fine-tune exactly how your expression signals respond to the movement of the treadle.MIDI ControlBeyond analog control, Canvas Expression becomes a powerful MIDI controller capable of sending up to 16 independently assignable MIDI messages over both USB-C and TRS MIDI. Using the Canvas Expression web editor at https://canvasexp.walrusaudio.io, assign control to pedals, processors, DAWs, virtual instruments, and plugins with smooth, high-resolution parameter sweeps or instant preset changes.With customizable treadle tension, onboard configuration, and an intuitive web editor for advanced setup, Canvas Expression is designed to become the central control point for virtually any modern rig.Dual Independent OutputsConfigure Jack A and Jack B independently. Each output can function as one of the following: Expression Output Switch Output Control Voltage (CV) Output Control two completely different devices simultaneously with one pedal.Universal Expression CompatibilityDesigned to work with a wide range of expression-enabled gear, Canvas Expression supports multiple wiring configurations and automatic wiring detection for quick setup. TRS RTS TS resistance mode Automatic wiring detection Adjustable tapers Forward or reverse sweep direction Simply connect your pedal, and with a few button presses, Canvas Expression determines the proper wiring automatically.Programmable Switch ControlNeed more than expression? Assign either output as a switch output for controlling amp channels, pedal functions, preset changes, or any compatible switching device.Customize: Momentary or latching operation Heel, middle, or toe activation point Multiple switching configurations Forward or reverse triggering Built for Synths & ModularGenerate control voltage directly from either output. Selectable voltage ranges include: 0–5V 0–3.3V Perfect for Eurorack systems, desktop synthesizers, and CV-enabled effects.Deep MIDI ControlCanvas Expression transforms into a flexible MIDI controller capable of controlling both hardware and software simultaneously. Up to 16 assignable MIDI messages Control Change (CC) Program Change (PC) Independent TRS MIDI and USB MIDI outputs High-resolution 14-bit USB MIDI MIDI input for remotely enabling or disabling outputs From pedalboards to DAWs, Canvas Expression fits naturally into MIDI-based workflows.Powerful Web EditorAdvanced setup is handled through the Canvas web app. Configuration possibilities: MIDI assignments Switch behavior TS resistance values Global settings Firmware updates Make changes in seconds without navigating complicated menus.Adjustable FeelDial in the treadle exactly how you like it.A simple drag adjustment lets you increase or decrease pedal resistance for a lighter or firmer sweep depending on your playing style.Built to LastJust like our Canvas Volume pedal, Expression has no strings, pots, or gears to wear out, get scratchy, or fail mid-set and is backed by our Limited Lifetime Warranty.Specs Connectivity: Variable operation TRS Output A and Output B for expression, switch, and control voltage output TRS Output: Voltage divider using a 50 k Ω potentiometer TS Output: Variable resistor with selectable total resistances - 10 k Ω, 25 k Ω, and 50 k Ω Switch Output: Grounds tip to sleeve, ring to sleeve, or tip and ring to sleeve Control Voltage Output: Selectable CV voltage ranges 0-3.3 V and 0-5 V MIDI: ⅛” TRS Type A MIDI In and MIDI Out USB-C: MIDI In and MIDI Out and firmware updates via walrusaudio.io Power Requirement: Isolated 9 VDC, center-negative, 300 mA minimum Size: Height: 1.9” / 48 mm Width: 3.6” / 91 mm Depth: 8.9” / 225 mm Weight: 2.2 lbs
