The StompMix 4 Compact Digital Mixer Pedal is built with a powerful 32-bit 100Mhz DSP engine and a compact lightweight stomp box package. The StompMix 4 offers a full featured, highly intuitive four channels Digital Mixer with a Color Display. The DSP engine provides a compressor, limiter, Mid sweepable EQ, Highpass Filter, Notch Filter, Phase reverse to each of the 4 inputs. Analog inputs consisted of 2 Class A solid-state Mic pre-amps with +48V Phantom power and two 1/4″ TS line inputs. Two sets of stereo Mix outputs are selectable between a 1/8″ TRS jack and 2 1/4″ TS jacks . 2 Footswitches with assignable functions.