Pioneer GM-A4704 4-Channel Bridgeable Amplifier ，Black/red<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>520 Watts Max Power</li><li>Automatic signal sensing and Turn-On</li><li>Variable high pass filter</li><li>Speaker level inputs</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41tMH4vjgwL.jpg" noproxy>