48KMA6004 600 Watt 4-Channel Marine Amplifier

The KMA600.4 is a flexible four-channel marine amplifier built to power a full boat audio system from one unit. A Class-D power supply delivers 150W per channel at 2 ohms stereo, or 300W x 2 when bridged, with 725W of total dynamic power for solid headroom during peak passages. Variable KickEQ bass boost adds up to 6dB of extra low end at the turn of a knob, useful when there's no room for a dedicated subwoofer amp, and a 12dB adjustable crossover lets you tune highs, lows, or a bit of both for whatever speakers are connected. The amplifier can power as many as eight speakers, making it a practical core for anything from a simple two-zone setup to a fuller wraparound system. Real Marine ABYC/NMMA-compliant power connections and a conformal-coated circuit board protect the electronics from moisture and salt air, while 316L stainless-steel hardware resists corrosion through years on the water. A signal-to-noise ratio above 95dB keeps the output clean even at higher volumes. This amplifier suits center-console boats, pontoons, and any marine setup that needs one flexible unit rather than several single-purpose amps.