Product info:mono marine subwoofer amplifier250 watts RMS x 1 at 4 ohms500 watts RMS x 1 at 2 ohms750 watts RMS x 1 at 1 ohmClass D amp technologyfrequency response: 20-250 Hzvariable low-pass filter: 50-250 Hz, 24 dB/octavevariable subsonic filter: 10-55 Hz, 12 dB/octavevariable bass boost: 0-12 dB at 45 Hzwired remote control for sub channel includedMore 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 an 80 A fuse recommendeddimensions: 9.75"W x 2.0"H x 6.8"Dwarranty: 2 years60-day returnsMFR # MA750.1Item # 236MA7501California customers: Please click here for your Proposition 65 WARNING. Read more