Hifonics TPS-A350.4 Compact Four Channel， 350 Watt Powersports Amplifier<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Amplifiers are abyc &amp; ASTM certified which defines that Marine amplifiers must use conformal coated PC boards to resist corrosion from Salt Spray &amp; moisture.</li><li>Monitor thermal， overload， DC， and speaker short protection with lighted indicators on the amplifier end panel</li><li>The Dual coil Pulse width modulated power supply keeps voltage constant through the ultra-fine output devices</li><li>Water resistant for durability in any environment</li><li>The highly engineered q-stasis pre-amplifier stage reduces incoming noise from source units dramatically improving sound quality</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41A%2ByRpes5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/419iaB0TrrL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41MEhq0Rf%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/417DPv2d2hL.jpg" noproxy>