Alpine KTA-30FW 600 Watt 4-Channel Small Mini Car Audio Amplifier Power Pack Amp

Good clean sounds and very small device but after about 15 mins of use the amp does get very hot. I'm running 2 pairs of 6.5" speakers at 4ohm and sounds is very good. Due to it's waterproof design it doesn't have cooling fan so make sure to mount in an area that gets plenty of air flow to avoid it over heating.