Car Amplifier
A car amplifier boosts a very small electrical audio signal from the head unit to a higher voltage. It can drive loudspeakers connected with speaker wire with more power, volume, and sound clarity. Most car audio in-dash stereos have only about 15 to 18 watts available and begin to distort very badly at their maximum output.
An external amplifier not only solves this problem but also can greatly improve the reproduction fidelity of the music you enjoy.
For powerful bass, subwoofers need lots of power which is impossible to get from a car stereo alone. This is also a problem when you’d like to use 4 ohm or even 2Ω aftermarket speakers that need more power for maximum performance when upgrading your sound system.
An external amp provides higher sound quality as it can offer lower noise and distortion due to more advanced electronics included for that purpose. Car stereos often use a more basic design and cheaper components that limit what you can hear.
