KENWOOD MaxPower Series KAC-M1814 — 400W Max 4-Channel Compact Marine/Powersports/Automotive Amplifier

Compact 4-channel amplifier offering up to 400 watts peak output. Power ratings: 45 watts RMS x 4 at 4 ohms, 45 watts RMS x 4 at 2 ohms, and 90 watts RMS x 2 when bridged at 4 ohms, making it suitable for cars, motorcycles, ATVs and boats. Frequency response: 20 Hz to 20 kHz. Designed for harsh environments, the circuit board is conformal-coated to resist vibration and corrosion, and a plastic-covered connector helps shield against water and dust. The preamp and power amp sections are kept separate to reduce radiation noise for cleaner sound. Input and tuning features include speaker-level input, signal-sensing turn-on, and adjustable low-pass/high-pass filters (50 Hz to 200 Hz, 12 dB per octave). Physical dimensions: 5-11/16 in. W x 1-3/4 in. H x 3-7/8 in. D. Weight: 4.95 lbs. What’s included: installed 30-amp ATM mini fuse; 9-in. speaker output harness (4-pin MOLEX plug on 1 end); four self-tapping screws (M4 x 16 mm); two 13.5-in. plastic wire ties; clear plastic self-adhesive protective covers for controls (1 sheet); and instruction manual/warranty card.