When you’re cruising along the Intracoastal or spending the day anchored with friends, music sets the tone. But not every audio system is designed to withstand the harsh marine environment. Salt spray, humidity, and constant vibration can wear down standard equipment quickly. That’s why boaters choose the Fusion MS-AM504, a marine-grade amplifier designed to deliver incredible power a... https://amarinetech.com/products/fusion-ms-am504-4-channel-marine-amplifier-500w-010-01500-00