The Pyle PLMRMP3A 4-Channel Waterproof MP3/iPod Marine Power Amplifier is a powerful addition to your marine audio setup. It pushes 200 W maximum on each of the two channels for a bone-rattling power that's basically unmatched. It takes RCA line inputs and includes a 3.5 mm-to-RCA adaptor so you can plug in your MP3 player or iPod easily. Also takes standard high and low level inputs from a marine head-unit. For safety, this amp is equipped with power protection circuitry and soft turn on/off prevents damage to your speaker equipment.