USB Soundcard / Interface The Numark DJ iO is the only DJ audio interface you need. With assignable outputs for either seperate decks or master out and headphones as well as a mic input.
The DJ-iO connects to your PC or Mac via USB, you can assign the audio routing via your software like Cue or Traktor. Choose to assign each deck to either of the stereo RCA outputs to allow you to connect them directly to your mixer, or use the softwares mixer to route the master audio to one RCA output and the headphone out to the 1/4″ jack output. You can add a microphone directly to the DJiO and control the volume on the front, this signal feeds directly to the master output.