Feldman, Leonard C. AT&T Bell Laboratories, Murray Hill, New Jersey.
Last reviewed:October 2019
- Performance characteristics
- Speaker impedance
- Related Primary Literature
- Additional Reading
An electronic circuit for amplification of signals within or somewhat beyond the audio frequency range (generally regarded as 20 to 20,000 Hz). Audio amplifiers may function as voltage amplifiers (sometimes called preamplifiers), power amplifiers, or both. In the last case, they are often called integrated amplifiers. See also: Power amplifier; Voltage amplifier
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