A car Amplifier is the component that gives your music power
and Volume.
Amplifiers take a signal from the stereo and use an
independent power source to change it into a more powerful signal for the
speakers. The more power the amplifier delivers, the cleaner the sound from the
speakers.
Depending on the number of channels amplifier categories
are; Mono block, 2 channel,4 channel, 5 channel Amplifiers.