KICKER 48KMA3604 360 Watt 4-Channel Marine Amplifier Boat Amp KMA360.4

The KMA360.4 is a four-channel Class D marine amplifier for boats running multiple speaker zones off one chassis. It delivers 90W per channel at 2 ohms or 180W per channel bridged into two channels, with 500W of dynamic power. Bridging capability means it can power as many as eight speakers in a typical install.

Class D efficiency matters on a boat, where current draw and heat both work against you. This amp puts out real power without the current appetite of a large Class A/B design, so it plays longer on battery at anchor.

A variable 12dB crossover lets you set high pass, low pass or all pass per pair, which is how you keep small cockpit speakers from trying to reproduce bass they cannot handle. KickEQ adds up to 6dB of variable bass boost centered at 40Hz for low end that carries over wind and engine noise.

Every connection is built for the water. The circuit board is conformal coated, power terminals meet ABYC and NMMA standards, and 316L stainless-steel mounting hardware is included. The chassis measures 2-5/16" tall, 7-1/8" wide and 12-7/16" long, so it fits behind a helm panel or in a dry storage compartment on runabouts, pontoons and deck boats.