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preamplifier (preamp)

A preamplifier (preamp or "pre") is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.The quality of the preamplifier is accessed by how successfully the preamplifier delivers the signal without tampering with the audio information traveling in the electrical signal.