The Numark DJ I/O USB 2.0 Audio Interface is compact and rugged enough to live in your gig bag, but powerful enough to provide solutions for a wide range of audio I/O needs. The DJ I/O from Numark gives software-based DJs, performers and producers a range of options for outputting their final audio, whether in the form of a live mix or a just-completed new track. DJs and producers pass audio from their software-based application of choice through a traditional mixer (for multi-channel mixing) and output to a pair of stereo RCA connections, via a forward-thinking USB 2.0 connection. The Numark DJ I/O audio interface features ultra-low latency audio (via ASIO drivers), with 2 independent RCA stereo outputs, a mic input with adjustable gain on stereo pair #1 and a 1/4 inch stereo headphone output on stereo pair #2. The Numark DJ I/O is USB bus powered and also operates with 9V DC external power supply (sold separately).