| Audio amplifier is an electronic amplifier that
amplifies low-power audio signals to a level suitable for driving
loudspeakers and is the final stage in a typical audio playback
chain.
The preceding stages in such a chain are low power audio
amplifiers which perform tasks like pre-amplification, equalization,
tone control, mixing/effects, or audio sources like record
players, CD players, and cassette players. Most audio amplifiers
require these low-level inputs to adhere to line levels.
While the input signal to an audio amplifier may measure
only a few hundred microwatts, its output may be tens, hundreds,
or thousands of watts. |
