Strymon UltraViolet — MIDI Editor & CC Reference

Control the Strymon UltraViolet from your browser — full MIDI CC reference for 5 parameters, interactive editor, and AI-generated presets. Free, no install.

Nitelite gives the UltraViolet a full browser-based control surface: turn every knob, flip every switch, describe the tone you want to the AI Tone Terminal, and save the results — all sent to the pedal live over MIDI (default channel 1). Works free 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 — bypass on 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

The UltraViolet has 300 hardware preset slots. Nitelite can save your current settings to a slot and recall slots via MIDI program change.