General Features: 4-Channel Drvn Series Class A/B Car Amplifier RMS Power Rating: 4 ohms: 70 watts x 4 chan. 2 ohms: 100 watts x 4 chan. Bridged, 4 ohms: 200 watts x 2 chan. Pulse Width Modulated MOSFET power supply LED power (green) and protect (red) indicators Variable Bass Boost (0 to +12 dB bass boost at 50 Hz) Soft start turn-on 4/3/2 channel operation 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 (50-200 Hz, 24 dB/octave) Variable high-pass filter (50-200 Hz, 24 dB/octave) Frequency response: 5-50000 Hz 8 gauge power and ground wiring is required for installation. Dimensions: 12-1/4"W x 11-13/16"D x 2-3/8"H