Product info:4-channel marine amplifier100 watts RMS x 4 at 4 ohms200 watts RMS x 4 at 2 ohms400 watts RMS x 2 bridged at 4 ohmsClass D amp technologyfrequency response: 20-20,000 Hzvariable high- and low-pass filters (40-400 Hz, 12 dB/octave)More info:conformal coated circuit boards, rubber gaskets around the RCA inputs, and covered controlspreamp and speaker-level inputsspeaker-level inputs require speaker wire-to-RCA adaptersspeaker-level inputs can handle up to 10V (25W)signal-sensing turn-on with speaker-level inputprotect and clip LED indicatorswiring, fuse, and hardware not included with amplifier4-gauge power and ground leads and a 60A fuse recommendeddimensions: 9.75"W x 2.0"H x 6.8"Dwarranty: 2 years60-day returnsMFR # MA800.4Item # 236MA8004California customers: Please click here for your Proposition 65 WARNING. Read more