BEHRINGER PRO MIXER NOX1010 Premium 5-channel club 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 Beat-syncable FX section with 2 parameter controls assignable to Mic, 1, 2, 3, 4 or Master Built-in USB interface for recording and playback of any digital music file. Works with your PC or Mac computerno setup or drivers required TRACKTION 4 Music Production Software included free of charge to help you realize your creative potential