Mono amplifier delivers 500 watts at 2 ohms, 350 watts at 4 ohms * Variable low pass crossover with 12dB/octave slope and 40Hz to 130Hz crossover point * 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