Use as a self-contained digital system, multi-effects processor or slave from control CDs/vinyl totally flexible. Designed by M-Audio's SynchroScience group built by DJs for DJs. 4 x 4 USB 1.1 audio interface with 16-bit/48kHz fidelity CD quality and beyond. 4 RCA inputs configurable for line-level or phono signals connects to all standard DJ mixers, turntables and CD players. 4 RCA outputs with high +10dBV peak output level rock the house. 2 mix knobs for blending audio inputs and USB output mix vinyl and digital tracks with the same interface. Torq DJ software included instantly turn any Mac or PC into a powerful DJ rig.