JBL MA704 4-channel marine amplifier - 70 watts RMS x 4
Space-age power: If you've ever tried to power your boat's speakers with a marine radio, then you know that you need serious power to get good sound out on the open water. Sporting a sleek stealthy profile, JBL's MA704 marine amplifier will deliver 70 watts RMS each of four separate speakers. The amp could also power two speakers and a sub, in 3-channel mode. For even louder fun, you could bridge the amp to 2-channel mode and power a couple high-performance speakers with 200 watts RMS each.