Upgrade your outdoor vehicle’s sound system with a powerful new centerpiece thanks to the Rockford Fosgate Power Marine Class AD 400 Watt 4 Channel Amplifier. This marine amplifier unit features a durable . lightweight shell with a 2-part epoxy coating on the circuit boards that makes it safe and durable for use around water and in the sun. CLEAN input/output detection and Motex connections make the amplifier easy to use with a wide range of equipment.The 400 watt marine amp features a 2 channel 2/4 ohm design with an input switch and Constant Power design that ensure you get the maximum effect with minimal power draw. Dual extruded heat sinks and built-in cooling fans prevents the amplifier from overheating . even when going harder for longer.