WordNet
audio amplifier
n. an amplifier that increases the amplitude of reproduced sound
Usage examples of "audio amplifier".
Mondaugen admitted he'd been using an audio amplifier and loudspeaker.
The bronze man went to work in the labyrinth of apparatus, setting up electrical coils, tubes, connecting an audio amplifier of tremendous sensitivity and power.
Doc had switched an audio amplifier-and-loud-speaker into circuit with the telephone, a procedure he commonly followed on calls in which his aides might be interested.