An electronic device that amplifies the audio signal to make it audible through speakers or headphones. It increases the signal’s power without distorting the sound and can come in various forms, such as a preamplifier or power amplifier, depending on the application.
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Amplifier
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Analog signal
A continuous signal that transmits information through a variable physical quantity, such as electrical voltage. In the audio field, this means the signal directly represents sound waves, as opposed to digital signals, which are encoded in discrete values.
