MB Quart RA1-750.1 Reference Series mono subwoofer amplifier — 750 watts RMS x 1 at 1 ohm

Product info: mono subwoofer amplifier 300 watts RMS x 1 at 4 ohms 500 watts RMS x 1 at 2 ohms 750 watts RMS x 1 at 1 ohm variable low-pass filter (50-250 Hz, 12 dB/octave) variable bass boost (0-12 dB at 45 Hz) switchable subsonic filter (Off/25 Hz, 12 dB/octave) wired remote bass level control included More info: preamp and speaker-level inputs speaker wire-to-RCA adapters required for speaker-level input DC offset-sensing turn-on with speaker-level input wiring, fuse, and hardware not included with amplifier 4-gauge power and ground leads and an 80A fuse recommended dimensions: 13-3/4"W x 2-1/4"H x 5-7/8"D warranty: 1 year