An amplifier is the device that turns the low voltage signals from your source equipment into a signal with enough gain to be used to power a pair of speakers. The functions of an amp can be split into two main sections.

What is amplifier with example?

Amplifiers are usually designed to function well in a specific application, for example: radio and television transmitters and receivers, high-fidelity (hi-fi) stereo equipment, microcomputers and other digital equipment, and guitar and other instrument amplifiers.