2 selectable balanced inputs & front panel aux input; 4-band, +/-18dB parametric equalizer; Independent volume & fader control; Independent subwoofer output & level control; Variable subwoofer low-pass crossover; 7V max front, rear & subwoofer outputs; Blue LED backlighting; Quick-disconnect wire harness; Signal-to-noise ratio: 80dB @ 5V; THD: .05%;