MB Quart RA1-280.4 Reference Series 4-channel car amplifier — 50 watts RMS x 4

Product info: 4-channel car amplifier 50 watts RMS x 4 at 4 ohms 70 watts RMS x 4 at 2 ohms 140 watts RMS x 2 bridged at 4 ohms variable low- and high-pass filters (50-250 Hz, 12 dB/octave) variable bass boost (0-9 dB at 45 Hz) 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 a 40A fuse recommended dimensions: 12-1/2"W x 2-1/4"H x 5-7/8"D warranty: 1 year