Allen & Heath Xone:DB4 4 Channel Digital DJ Mixer With Effects Powerful Quad FX Core DSP engine, Each channel has a built-in looper, with selectable loop length from 1/16 beat to 4 bars Equipped with the Xone dual filter system Built-in, high quality (24-bit / 96kHz), multi-channel, fully patchable USB2 soundcard Each music channel has a 3-band EQ