Eventide H90 Harmonizer — MIDI Editor & CC Reference
Control the Eventide H90 Harmonizer from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the H90 Harmonizer 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 |
|---|---|---|
| P MIX | CC 22 | Program-level wet/dry mix — blends between dry signal and the combined output of both Presets A and B |
| IN GAIN | CC 23 | Program input gain — adjusts the signal level entering the H90 processing. Center (64) = unity gain |
| OUT GAIN | CC 24 | Program output gain — adjusts the processed signal level. Center (64) = unity gain |
| QUICK 1 | CC 25 | Quick Knob 1 — assignable per Program to any Preset A, Preset B, or Program-level parameter |
| QUICK 2 | CC 26 | Quick Knob 2 — assignable per Program to any Preset A, Preset B, or Program-level parameter |
| QUICK 3 | CC 27 | Quick Knob 3 — assignable per Program to any Preset A, Preset B, or Program-level parameter |
| HOTKNOB P | CC 28 | Program HotKnob — macro controller that simultaneously adjusts multiple mapped parameters across both Presets. Controlled by the Perform encoder |
| HOTKNOB A | CC 29 | Preset A HotKnob — macro controller for Preset A parameters |
| HOTKNOB B | CC 30 | Preset B HotKnob — macro controller for Preset B parameters |
| A IN GAIN | CC 31 | Preset A input gain — adjusts signal level entering Preset A algorithm |
| A OUT GAIN | CC 33 | Preset A output gain — adjusts Preset A processed signal level |
| B IN GAIN | CC 34 | Preset B input gain — adjusts signal level entering Preset B algorithm |
| B OUT GAIN | CC 35 | Preset B output gain — adjusts Preset B processed signal level |
Switches
| Switch | MIDI CC | Positions |
|---|---|---|
| EFFECT TYPE | CC 50 | Delay / Distortion / EQ / Looper / Modulation / Multi / Pitch / Reverb / Synth / Utility |
Footswitches
- P — CC 40
- A — CC 41
- B — CC 42
Special MIDI Functions
- Tap Tempo — CC 43
- Expression — CC 44
- HotSwitch 1 — CC 47. Engage HotSwitch 1 — toggles Preset A's saved HotSwitch parameter snapshot on/off. Value ≥64 = engage, <64 = release.
- HotSwitch 2 — CC 48. Engage HotSwitch 2 — toggles Preset B's saved HotSwitch parameter snapshot on/off. Value ≥64 = engage, <64 = release.
- HotSwitch 3 — CC 49. Engage HotSwitch 3 — toggles a third assignable HotSwitch parameter snapshot on/off. Value ≥64 = engage, <64 = release.
- Program Increment — CC 45. Cue up the next Program in the active Playlist. Does not load immediately — footswitch press required to confirm.
- Program Decrement — CC 46. Cue up the previous Program in the active Playlist. Does not load immediately — footswitch press required to confirm.
- Tuner — CC 51. Enter or exit the built-in chromatic tuner. Not accessible in Perform Mode.
- Mode Toggle — CC 52. Toggle between SELECT Mode and PERFORM Mode.
Hardware Presets
H90 Harmonizer has 99 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.