Denon DJ DN-X1600 Professional 4-Channel Matrix Mixer with USB Audio I/F Fully MIDI Mappable with additional focused area of up to 4 MIDI pages by parameter knobs and buttons Traktor Scratch Certified Mixer Independent Effector w/14 Effects available 45mm Cross Fader (Flex Fader) w/tension adjust MAC,Windows XP/Vista/Win7,8 Compatible