An audio power amplifier is a device that amplifies low-power electronic audio signals, such as the output of a radio receiver or an electric guitar pickup, to a level strong enough to drive loudspeakers or headphones. It forms the final electronic stage in an audio playback chain, used in home audio systems, concert sound reinforcement, public address systems and musical instrument amplifiers such as guitar amps, boosting signals that may measure only a few hundred microwatts up to a few watts in consumer devices or tens of thousands of watts in large concert systems; many consumer electronics combine a preamplifier and a power amplifier in a single unit, though standalone power amplifiers remain popular with audiophiles and professionals. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Sources
1. Wikipedia, Audio power amplifier
Introduction, GICS sector classification
An audio power amplifier amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
Introduction, offering kind classification
An audio power amplifier amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
View the SourceWikidata: Audio power amplifier
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