In some situations, you might want to use other audio devices independently from the TRAKTOR KONTROL S4 system, like an additional setup with turntables and mixer. A solution consists in using this other mixer as master mixer. This mixer will receive the mix coming from TRAKTOR KONTROL S4 and thus act as middleman on the way to your amplification system. Starting from the basic setup, you only need to change the connections at the Main Outputs of your S4.
Connect the Main Outputs of the S4 to Available Inputs on Your Master Mixer
► On the rear panel of your S4, unplug the cables connecting the Main Outputs of your S4 to your amplification system, and connect the Main Outputs 1/2 1/4" (balanced) or RCA (unbalanced) sockets to an available stereo input channel on your master mixer, depending on the type of inputs supported by your master mixer.
On the master mixer, make sure that the input channel receiving the TRAKTOR KONTROL S4 signal is set to line level.