Native Instruments Traktor Kontrol S2 MK3
The Kontrol S2 MK3 is a two-channel controller with an integrated sound card. It has two integrated stereo outputs (line and 1/8” / 3.5 mm TRS), headphone outputs (1/8” / 3.5 mm TRS) and microphone inputs (1/4” / 6.3 mm TRS). The MK3 uses the standard HID protocol to send and receive signals from a computer, so it can work with Mixxx. The Kontrol S2 MK3 can run from USB bus power, and using a separate power supply has no impact on the output level or LED brightness (as opposed to the MK2).
New in version 2.2.4.
Changed in version 2.3: Unbind Main knob from Mixxx’s Main Gain, because it controls the hardware volume.
Mixxx Sound Hardware Preferences
Main output: channels 1-2
Headphone output: channels 3-4
Mixxx mapping
Native Instruments Traktor Kontrol S2 MK3 (schematic view)
Element  | 
Primary function  | 
Secondary function (+ SHIFT)  | 
|---|---|---|
1. REV Button  | 
Reverse play while held  | 
Reverse play + slip mode while held  | 
2. FLX Button  | 
Enable and disable slip mode  | 
|
3. Browse knob turn  | 
Scroll vertically in library  | 
Scroll horizontally in library  | 
3. Browse knob press  | 
Load selected track into deck  | 
Eject current track  | 
4. Preparation button  | 
Add selected track to AutoDJ queue (bottom)  | 
Add selected track to AutoDJ queue (top)  | 
5. List view button  | 
Toggles maximizing the library  | 
|
6. Sync button  | 
Syncs the BPM and phase (depending on quantize). Press longer to activate sync lock on that deck.  | 
Syncs the phase to that of the other track  | 
7. Keylock button  | 
Enable keylock for the deck  | 
|
8. Loop knob turn  | 
Halve or double loop size  | 
|
8. Loop knob press  | 
Set a loop of the defined number of beats and enables the loop  | 
Toggles the current loop on or off  | 
9. Samples button  | 
Active sampler mode (for the number buttons)  | 
|
10. Hotcues button  | 
Activate hotcue mode (for the number buttons)  | 
|
11. Move knob turn  | 
Beatjump backwards/forwards  | 
Halve or double beatjump size  | 
11. Move knob press  | 
Activates a rolling loop of the defined number of beats. Once disabled, playback will resume where the track would have been if it had not entered the loop  | 
Activate current loop, jump to its loop in point, and stop playback  | 
12. Jog wheels  | 
Control scratching when touched from the top (Missing: temporarily bend the pitch when touched from the side)  | 
|
13. Grid button  | 
Adjust beatgrid so closest beat is aligned with the current play position  | 
Adjust beatgrid to match another playing deck  | 
14. Shift button  | 
Activates secondary functions when pressed  | 
|
15. CUE button  | 
CUE default  | 
If the CUE point is set, jump to it and stops  | 
16. Play button  | 
Toggles playing  | 
Seeks a player to the start and then stops it  | 
17. Number buttons  | 
Function depends on current mode  | 
|
Hotcue mode  | 
If hotcue is set, seeks the player to hotcue position. Otherwise set hotcue at current position  | 
Clear the hotcue  | 
Samples mode  | 
Load selected track into corresponding slot. 
If track is loaded into corresponding slot, go to CUE point and play 
 | 
If track is playing, CUE default behaviour. Otherwise eject track  | 
18. Tempo fader  | 
Speed control  | 
|
19. Quantize button  | 
Toggles quantization for both decks  | 
|
20. Gain knob  | 
Unmapped (adjusts the hardware gain)  | 
|
21. Microphone button  | 
Toggles microphone talkover, long press for permanent activation  | 
|
22. Pre-Gain knob  | 
Adjusts the pre-fader gain of the deck  | 
|
23. HI knob  | 
High frequency filter  | 
|
24. MID knob  | 
Middle frequency filter  | 
|
25. LOW knob  | 
Low frequency filter  | 
|
26. Effect knob  | 
Quick effect knob for the corresponding deck  | 
|
27. Sample knob  | 
Adjusts the pregain for all the sample decks combined  | 
|
28. Headphone mix knob  | 
Adjusts the cue/main mix in the headphone output  | 
|
29. Headphone gain knob  | 
Adjusts the headphone output gain  | 
|
30. Effect buttons  | 
Load preset from the Quick Effect presets list on both decks. 8 first presets from the list can be selected. 
Press the button once to get the first preset, press twice for the second preset. 
Press once (Press twice): 
1 (5)  2 (6) 
3 (7)  4 (8) 
 | 
Load preset on selected deck  | 
31. Headphone buttons  | 
Toggles headphone cueing  | 
|
32. Volume fader  | 
Adjusts the channel volume fader for the corresponding deck  | 
|
33. VuMeter LEDs  | 
Show the current instantaneous deck volume  | 
|
34. Crossfader  | 
Adjusts the crossfader between both decks  |