RMS Power Rating: 4 ohms: 500 watts x 1 chan. / 2 ohms: 800 watts x 1 chan. / 1 ohm: 1200 watts x 1 chan. Pulse Width Modulated MOSFET power supply Wired remote bass level control included Preamp RCA outputs to daisy chain multiple amps 3-way protection circuitry (thermal, overload, and speaker short protection) Heavy duty aluminum alloy heat-sink for extreme heat dissipation Nickel-plated RCA level inputs Nickel-plated screw terminals Variable low-pass filter (40-240 Hz, 24 dB/octave) / Frequency response: 10-240 Hz / Dimensions: 12-3/8"W x 7-7/8"D x 2-3/8"H