Rockford Fosgate Punch 500-Watt Stereo Amplifier Delivers 125 Watts x 2 @ 4-Ohms, 250 Watts x 2 @ 2-Ohms, 500 Watts x 1 @ 4-Ohms bridged/mono Variable high- and low-pass crossovers (50-500Hz at 12dB/octave) MOSFET output stage and power supply Punch EQ2 bass and treble boosts Low-level RCA pass-through for system building