Source Audio C4 Synth — MIDI Editor & CC Reference
Control the Source Audio C4 Synth from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the C4 Synth 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
INPUT
CC 1
Input level going to the processor. Set to match your instrument output — lower for hot/active pickups, higher for passive pickups.
MIX
CC 3
Wet/dry balance. 50/50 mix at roughly 12 o'clock (value ~64). Full left = 100% dry, full right = 100% wet.
CONTROL 1
CC 5
Assignable control — function varies by preset. Common assignments: Envelope Speed, Filter Frequency, LFO Speed, Distortion Drive.
CONTROL 2
CC 6
Assignable control — function varies by preset. Common assignments: Envelope Sensitivity, Filter Q, Filter Depth, Distortion Output.
Alt / Secondary Knob Functions
Control
MIDI CC
Description
SENSITIVITY
CC 2
Envelope filter reactivity. Lower for hard players (smoother response), higher for light players (sharper response).
VOLUME
CC 4
Master output volume. Varies depending on the signal density of the active preset.