A car amplifier is the heart of your car's stereo, and whether you are looking to power a set of 6.5" speakers to a pair subwoofers, we've assembled a list of the best amps on the market.Most people believe that their car's OEM stereo has enough power for their speakers, or that their new aftermarket stereo that puts out 50 watts per channel (peak) is enough for a great sounding system. But, the reality is that whether it's an OEM system with '300 watts' or an aftermarket unit with 50 watts per channel, most ratings don't match the recommended ratings for an aftermarket system which can lead to poor sound or even blown speakers. In addition, the ratings that might be shown for a head unit or amplifier may be in 'Peak' power, instead of 'RMS' power. For example, a 50 watt Peak per channel aftermarket stereo might actually only be pumping around 15 watts RMS to each of your speakers. And a monoblock amplifier that is rated for 1000 watts might only put out half of that continuously.