35Hz-400Hz continuously variable low pass; 50Hz-1.5kHz continuously variable high pass; 6dB/oct crossover slope; Independent front & rear level controls; 110dB signal-to-noise ratio; DC to DC power supply; Subwoofer phase & stereo/mono switches; Remote subwoofer level control; 0dB-12dB @ 45Hz variable bass boost ; Dim: 1.25″H x 7.25″W x 4.38″D;