All KICKER Amplifier models use balanced differential inputs, making them compatible with any factory radio and eliminating unwanted noise within the audio system. A muting circuit cancels out additional noise that may surge down the line, so listeners enjoy the cleanest, clearest sound possible. Additionally, a choice of three automatic turn-on modes (remote, DC offset, signal sense) provide ultimate flexibility. Gain and crossover frequencies are top-mounted for easy access to fine tuning.