Preamplifier Definitions | What does preamplifier mean?
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prē-ămplə-fīər Meanings Synonyms Sentences An electronic circuit or device that detects and strengthens weak signals, as from a radio receiver, for subsequent, more powerful amplification stages. noun 0 0 In a radio, phonograph, etc., an auxiliary amplifier for boosting the voltage of a weak signal before it reaches the input of the main amplifier.
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