BEHRINGER PRO MIXER NOX404 Premium 2-channel battle DJ mixer for the most demanding turntablist, remixer and digital DJ 45-mm infinium contact-free optical crossfader with adjustable tension and fader curve for years of use Built-in USB interface for recording and playback of any digital music file. Works with your PC or Mac* computerno setup or drivers required Beat-syncable FX section with 2 parameter controls assignable to Mic, 1, 2 or Master Awesome 3-band EQs with full-kill filters plus 10-segment level meters with peak hold function