Infinitys Reference 3004A amplifier will add plenty of muscle to your music without breaking a sweat, and itll look good doing it. This 4-channel powerhouse delivers 75 watts RMS to each of the front and rear speakers in your car. Into planning ahead? You could use this amp in 2-channel mode now to drive a couple subwoofers with 200 watts RMS each, then reassign it to your front and rear speakers when you get a bigger sub amp. Speaker-level inputs allow this amplifier to work in almost any system, even if youre keeping your cars factory radio. You can use the separate high- and low-pass filters on the front and rear channels to maximize the performance of your speakers or subs.