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An electronic device used for increasing the power of a signal.

Preamplifier An amplifier that prepares a small electrical signal for further amplification or processing

Main amplifier

The amplifier that produces the "power" of the sound (also called power amp) Integrated amplifier Preamplifier + Main amplifier


Integrated amplifier + radio

AVR / AV-receiver

Multi channel receiver OR multi channel integrated amplifier - 5.1 - 7.1 etc. (AM/FM tuner it is not a primary or mandatory function as an AVR still remains an amplifier)



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