Pioneer Gm-D7400M Mono Amplifier With 800-Watt Max Power Mono subwoofer car amplifier 200 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms) Variable low-pass filter (40-240 Hz) Selectable bass boost (0, 6, 12 dB at 50 Hz) P:reamp- and speaker-level inputs