Line 6 DL4 MkII — MIDI Editor & CC Reference
Control the Line 6 DL4 MkII from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the DL4 MkII 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 11 | Delay time (0-100%) |
| REPEATS | CC 13 | Delay feedback/repeats |
| TWEAK | CC 14 | Per-delay-model parameter (see sub-label for current function) |
| TWEEZ | CC 15 | Per-delay-model parameter (see sub-label for current function) |
| MIX | CC 16 | Delay/Looper wet-dry mix |
Alt / Secondary Knob Functions
| Control | MIDI CC | Description |
|---|---|---|
| REVERB DECAY | CC 17 | Reverb decay time |
| REVERB TWEAK | CC 18 | Reverb-specific parameter (varies per reverb model) |
| REVERB MIX | CC 20 | Reverb wet/dry mix (DSP Dry Path) or reverb level (Analog Dry Path) |
Switches
| Switch | MIDI CC | Positions |
|---|---|---|
| DELAY MODEL | CC 1 | Vintage Digital / Crisscross / Euclidean / Dual Delay / Pitch Echo / ADT / Ducked / Harmony / Heliosphere / Transistor / Cosmos / Multi Pass / Adriatic / Elephant Man / Glitch / Digital / Digital w/ Mod / Echo Platter / Stereo / Ping Pong / Reverse / Dynamic / Auto-Vol / Tube Echo / Tape Echo / Multi-Head / Sweep / Analog / Analog Mod / Lo Res Delay |
| REVERB MODEL | CC 2 | Room / Searchlights / Particle Verb / Double Tank / Octo / Tile / Ducking / Plateaux / Cave / Plate / Ganymede / Chamber / Hot Springs / Hall / Glitz / Reverb Off |
| SUBDIVISION | CC 12 | 1/8T / 1/8 / 1/8D / 1/4T / 1/4 / 1/4D / 1/2T / 1/2 / 1/2D |
| ROUTING | CC 19 | Rev → Dly / Parallel / Dly → Rev |
Footswitches
- BYPASS — CC 4
Special MIDI Functions
- Tap Tempo — CC 64
- Expression — CC 3
- Classic Looper Mode — CC 9. Switch the device into Classic Looper mode (on) or back to Preset mode (off). Works in both Preset and Classic Looper modes.
Hardware Presets
DL4 MkII has 128 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.