32Hz-250Hz continuously variable low pass; 40Hz-400Hz continuously variable high pass; 1x or 20x frequency multiplier; 6dB or 18dB/oct selectable slope; Independent front & rear level controls; 110dB signal-to-noise ratio; DC to DC power supply; Outputs for 3-way or front, rear & sub system configurations; Remote subwoofer level control; Variable bass boost 0dB-12dB; Dim: 1.88″H x 8.25″W x 5.13″D;