underdeck

Mixer

CH A

100%

CH B

100%

CH C

100%

CH D

100%

MASTER

100%

CROSSFADER

◀ A B ▶
🎹 Keyboard Shortcuts:
1-4 Play/Pause Deck
Q/W/E/R Load URL from clipboard
←/→ Move Crossfader
Space Toggle all decks

🎛️ Professional DJ Mixer Guide:
Channel Strips: Each deck has a vertical channel fader - like on a real Allen & Heath mixer
Crossfader Assign: Click A / / B to route channels to crossfader sides or through (⊗ = bypass crossfader)
CUE Buttons: Preview channels in headphones (visual only - full routing needs Web Audio API)
Crossfader: Mix between A-side and B-side channels. Only affects channels assigned to A or B
Master Fader: Final output level control

Typical DJ Workflow:
1. Load tracks on all 4 decks
2. Assign Deck A to A side, Deck B to B side
3. Keep Decks C & D on (through) for now
4. Use crossfader to mix between A and B
5. When ready, assign Deck C or D and mix them in