Strymon UltraViolet — MIDI Editor & CC Reference
Control the Strymon UltraViolet from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the UltraViolet controls in your browser and connect compatible MIDI hardware to send settings to your pedal. The reference below shows the controls mapped in Nitelite; available functions depend on the pedal and firmware. The default MIDI channel in Nitelite is 1. Browser MIDI control works in Chrome, Edge, Opera, or Brave — no install required.
Knobs
| Control | MIDI CC | Description |
|---|---|---|
| SPEED | CC 13 | LFO sweep rate |
| INTENSITY | CC 14 | LFO sweep amplitude — at minimum the amplitude is zero, resulting in a static effect determined by the Bias setting |
| VOLUME | CC 15 | Output level, up to +4dB boost at maximum |
Switches
| Switch | MIDI CC | Positions |
|---|---|---|
| MODE | CC 11 | Chorus / Blend / Vibrato |
| BIAS | CC 12 | Low / Mid / High |
Footswitches
- BYPASS — CC 102
Special MIDI Functions
- Expression — CC 100
- MIDI Expression — CC 60. Enables or disables MIDI expression pedal control. When on, an expression pedal connected via TRS can control any knob. Factory default is on.
- Bank Select — CC 0. Selects the active MIDI preset bank. Bank 0 = presets 0–127, Bank 1 = presets 128–255, Bank 2 = presets 256–299. Send before a Program Change to access the target bank.
- Footswitch — CC 27. Simulates a press of the physical footswitch — toggles bypass state or confirms an action depending on current pedal mode.
Hardware Presets
UltraViolet has 300 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.