Hifonics TMA-2000.4 Four channel marine amplifier<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Even at very high listening levels， Hifonics Super A/B Class circuitry results in a smooth and linear high end with lower distortion， plus higher current efficiencies and less heat buildup.</li><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>Flexible installation allows this amplifier to run in four channel or bridged mono mode</li><li>Control of amplifier output with on board electronic crossover to tailor specific frequencies to speakers and subwoofers.</li><li>Heavy duty aluminum alloy heat-sink allows amplifier to quickly dissipate heat while producing maximum power. Non-Corrosive treatment prevents any rust or other corrosion caused by marine use</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Z4RmMZI-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41b6y4B1bsL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/414PPzaltML.jpg" noproxy>