I've tried two different dynamic mics, one used one new that were both tested to be working in different software, that are not working in Traktor using a Kontrol S2 MK1. I think I'm doing everything correctly but don't know what I'm missing. I turn the gain knob al the way down, connect to the MIC socket, turn gain up, press the MIC ENGAGE button, and nothing happens, what could be wrong?