Rockford Fosgate Prime R150-2 150 Watt Stereo Amplifier Two-channel amplifier delivers 75 watts at 2 ohms, 50 watts at 4 ohms, and 150 watts at 4 ohms bridged mono Selectable high-pass crossover at 80Hz or variable low pass crossover at 50Hz-250Hz, both with 12dB/octave slope Punch Bass adjustable bass level control of 0 to +12 dB centered at 45Hz RCA inputs for signal level input and pass-through jacks for system building The input gain control is preset to match the output of most source units