Meris Polymoon — MIDI Editor & CC Reference
Control the Meris Polymoon from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the Polymoon 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 |
|---|---|---|
| TIME | CC 16 | Delay time |
| FEEDBACK | CC 17 | Delay feedback amount |
| MIX | CC 18 | Balance between dry and wet signal |
| MULTIPLY | CC 19 | Cascading delay multiplication — adds rhythmic complexity |
| DIMENSION | CC 20 | Stereo spread and spatial depth of the delay |
| DYNAMICS | CC 21 | Envelope-controlled filtering that responds to playing dynamics |
Alt / Secondary Knob Functions
| Control | MIDI CC | Description |
|---|---|---|
| EARLY MOD | CC 22 | Early reflection modulation amount |
| FB FILTER | CC 23 | Tone filtering applied to feedback path |
| DELAY LVL | CC 24 | Output level of the delay signal |
| LATE MOD | CC 25 | Modulation applied to later delay taps |
| FLANGER MODE | CC 26 | Selects the dynamic flanger voicing |
| FLANGER SPEED | CC 27 | Speed of the dynamic flanger effect |
Switches
| Switch | MIDI CC | Positions |
|---|---|---|
| DOTTED 8TH | CC 9 | 1/4 Note / Dotted 8th |
| PHASER MODE | CC 29 | Off / Slow / Whole Note / 1/4 Note |
| HALF SPEED | CC 31 | Full / Half |
Footswitches
- TAP — CC 28
- BYPASS — CC 14
Special MIDI Functions
- Tap Tempo — CC 28
- Expression — CC 4
- Bypass — CC 14. When on, the effect is bypassed (dry signal only). When off, the effect is engaged. Per Meris spec: 0–63 = FX bypass, 64–127 = FX enabled.
- Tempo — CC 15. Sets the delay time directly in 10 ms increments (0 = 0 ms, 120 = 1200 ms). Use instead of tap tempo for precise delay time control via MIDI.
Hardware Presets
Polymoon has 16 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.