Crunch P1-1050.2 - 1000W Max 2-Channel Class A/B PowerOne Series Car Amplifier: Features: PowerOne Series 2-Channel Class A/B Car Amplifier RMS Power Rating: * 4 ohms: 125 watts x 2 chan. * 2 ohms: 250 watts x 2 chan. * Bridged, 4 ohms: 500 watts x 1 chan. MAX Power Rating (14.4V): * 4 ohms: 250 watts x 2 chan. * 2 ohms: 500 watts x 2 chan. * Bridged, 4 ohms: 1000 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 12 dB bass boost at 45 Hz) * 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, 12dB/octave) * Variable low-pass filter (30-250 Hz, 12 dB/octave) * Damping factor: 180 * Frequency response: 10-45,000 Hz Dimensions: 12-1/12"L x 9-1/8"W x 2-1/16"H