A compact 4-channel DJ mixer. All the 4 channels of the DDM2000USB feature gain control, 3-band EQ and LED level meter. Various sources like Line, Turntables (Phono), Microphone and USB audio can be connected to the unit and assigned to channel. The balanced XLR master outputs, RCA master outputs, booth outputs and record outputs fit in for all kind of setup. The DDM2000USB features a USB audio interface that can be used for playing audio from or recording audio to computer. Install the 2 included famous DJ software Deckadnace LE and Traktor 3 LE and enjoy computer Djing with real analog DJ Mixer. The DDM2000USB is built with rugged and stiff metal housing. All knobs and faders are strong and reliable. The DDM2000USB is definitely the best 4-channel mixer for its price.