KICKER 48KMA6004 600 Watt 4-Channel Marine Boat Amplifier+Amp Kit KMA600.4

This bundle pairs the Kicker KMA600.4 four-channel marine amplifier with a Rockville RMWK4 waterproof wiring kit and two 25-foot MRCA25 RCA cables, covering the amplifier and every cable needed to install it in one order. The KMA600.4 uses a Class-D power supply to deliver 150W per channel at 2 ohms stereo (300W x 2 bridged), with 725W of dynamic power and variable KickEQ bass boost of up to 6dB for extra low end without a separate subwoofer amp. A 12dB adjustable crossover lets you tune the system by ear, and Real Marine ABYC/NMMA-compliant power connections plus 316L stainless-steel hardware keep corrosion off the table through years on the water. The RMWK4 wiring kit is built specifically for wet environments, with tinned-OFC RCA cable, 4-gauge power and ground cable wrapped in poly woven mesh for chemical resistance, mini-ANL fuses rated at 80 and 120 amps, and all the terminals and cable ties needed for the run from battery to amp. The two MRCA25 cables extend the signal path from the head unit to the amplifier with tinned copper conductors, a fully waterproof molded connector, and a locking split-pin design that won't vibrate loose over rough water. Together the three pieces cover power, ground, and signal wiring alongside the amplifier itself, so the only thing left to do is mount and connect.