AudioControl's ACM series of amplifiers are fantastic. Very small, powerful, great sound, and 5 year warranty! The ACM 4.300 is a 300 watt RMS (actually puts out a bit more) full range amplifier. It also has an LC6i built in! That means it can tie into a factory radio, and can sum channels from a factory amplifier. (that would take a $200 part to do!) What a cool lil' amp!