Rockford P1000X1BD Punch 1-Channel Amplifier 300 Watts x 1 @ 4-Ohm / 500 Watts x 1 @ 2-Ohm / 1000 Watts x 1 @ 1-Ohm. Short circuit protection Works with factory installed & aftermarket source units Onboard 12dB/octave LowPass crossover & Infrasonic filter On-board Punch EQ with +18dB boost at 45Hz Cast Aluminum Heatsink with Stealth top mounted control panel