This Pyle Hydra amp will power your speakers on the dock, in your boat, or by the pool Ė itís completely waterproof. This 4-channel, 400-watt marine amp takes both high and low level inputs, so itís compatible with a variety of head units and sources. Remote turn/on off makes controlling this amp a breeze. Gold plated RCA inputs means this amp wonít be a weak link in your setup. For protection, count on the heavy duty aluminum alloy heatsink to prevent overheating, as well as thermal, overload, and short circuit protection. Comes complete with mounting screws and hardware. Runs on 12 volts DC.