Crunch P1-1650.2 - 1600W RMS 2-Channel PowerOne Series Car Amplifier: Features: * PowerOne Series 2-Channel Class A/B Car Amplifier * RMS Power Rating * 4 ohms: 400 watts x 2 chan. * 2 ohms: 800 watts x 2 chan. * Bridged, 4 ohms: 1600 watts x 1 chan. * SEPP Class A/B analog amplifier * Pulse Width Modulated MOSFET power supply * LED power (green) and protect (red) indicators * Variable Bass Boost (0 to +9 dB bass boost at 45Hz) * Slow un-mute soft start turn-on * 2/1 channel operation * Speaker-level inputs with signal sensing for automatic turn-on * Preamp RCA outputs to daisy chain multiple amps * 3-Way System Protection circuitry (thermal, overload, and speaker short protection) * Heavy duty aluminum alloy heatsink for extreme heat dissipation * Nickel-plated RCA level inputs * Nickel-plated screw terminals * Input sensitivity: * Level: 200mV-6V * Variable high-pass filter (60-12,000 Hz, 12 dB/octave) * Variable high-pass filter (30-250 Hz, 12 dB/octave) * Damping factor: >180 * Frequency response: 10-45,000 Hz * Dimensions: 12-2/3"L x 9-1/8"W x 2-1/16"H