Skar Audio SK-125.4D Class D 4 Channel Amplifier
Surprisingly good amp.  Don't be scared by the &#34;Class D&#34; label, this thing delivers very clean amplification, hits hard and fast, with lots of power to spare.  I'm driving 2.6ohm components and the amp barely gets warm while my ears are ringing... Very, very good power.  Just be sure your RCA preouts are properly grounded... lots of HUs these days have crappy RCA ground and that will give you alternator whine.  I fixed mine with a fused jumper between the RCA shield and the HU chassis, that solved t