Professional DJ USB/MIDI controller with integrated audio interface Integrated 4 channel USB audio interface with 16 bit/48 kHz Stereo RCA inputs (with phono pre-amp) in order to connect CD players and turntables plus 6.3 mm microphone jack (with an equalizer of its own) Stereo RCA outputs for the connection of a master sound system and 6.3 mm headphones jack for direct monitoring