Strymon Zelzah — MIDI Editor & CC Reference
Control the Strymon Zelzah from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the Zelzah 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 (4-Stage) | CC 12 | 4-Stage phaser LFO rate |
| MIX (4-Stage) | CC 14 | 4-Stage dry/wet balance — mild phasing at min, 100% wet at max, strongest at 12 o'clock (50/50) |
| DEPTH (4-Stage) | CC 13 | 4-Stage LFO range — deeper phasing effect as turned clockwise |
| SPEED (6-Stage) | CC 19 | 6-Stage phaser LFO rate |
| VOICE (6-Stage) | CC 21 | 6-Stage voicing — sweeps from pure phaser (left) through flanger tones (12 o'clock) to chorus (right) |
| DEPTH (6-Stage) | CC 20 | 6-Stage LFO range — more dramatic phase and/or time modulations as turned clockwise |
| POLARITY (4-Stage) | CC 15 | Barber sweep direction — 0=Negative (falling), 1=Positive (rising) |
| STEREO SPREAD (4-Stage) | CC 16 | 4-Stage stereo image width — 0=narrow (off), 127=wide |
| STEREO SPREAD (6-Stage) | CC 22 | 6-Stage stereo image width — 0=narrow (off), 127=wide |
Switches
| Switch | MIDI CC | Positions |
|---|---|---|
| SWEEP | CC 11 | Classic / Barber / Envelope |
| RESONANCE | CC 18 | Off / Mild / Strong |
| ROUTING | CC 23 | Series / Parallel / Split |
Footswitches
- 4-STAGE ON — CC 10
- 6-STAGE ON — CC 17
Special MIDI Functions
- Expression — CC 100
- MIDI Expression — CC 60. Enables or disables MIDI expression control. When off, the EXP/MIDI jack ignores expression data. Default: On.
- Bypass Both Stages — CC 33. Simultaneously bypasses (0) or enables (127) both the 4-Stage and 6-Stage phaser circuits.
- Footswitch A (4-Stage) — CC 27. Remotely triggers the 4-Stage ON footswitch. Send 127 to press, 0 to release.
- Footswitch B (6-Stage) — CC 28. Remotely triggers the 6-Stage ON footswitch. Send 127 to press, 0 to release.
Hardware Presets
Zelzah has 300 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.