Control the Source Audio ZIO Bass Preamp from your browser — full MIDI CC reference for 6 parameters, interactive editor, and AI-generated presets. Free, no install.
Nitelite gives the ZIO Bass Preamp 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.
| Control | MIDI CC | Description |
|---|---|---|
| OUTPUT | CC 14 | Master volume control. Boost up to +16dB or cut by -6dB. Can be used as a clean boost or as an "underdrive" when set below bypass level. |
| BASS | CC 15 | Low-end shelving boost centered at 100Hz. Starts flat (no boost) at minimum and boosts bass by up to +11dB at maximum. This is a boost-only control — it cannot cut low frequencies. |
| TREBLE | CC 16 | Active shelving filter at 1kHz. Flat (no boost or cut) at noon. Boosts 1kHz and above by up to +14dB at maximum, cuts by up to -6dB at minimum. |
| FOCUS | CC 17 | High-pass filter control. Sweeps the bass-cutting filter to higher frequencies as you rotate clockwise, removing more low-end. Works in conjunction with the BASS knob — when BASS is active, FOCUS creates a peaked bass response by pitting a movable HPF against the fixed 100Hz bass boost. |
| Switch | MIDI CC | Positions |
|---|---|---|
| GRIT | CC 18 | Off / On |
| SCOOP | CC 19 | Off / On |