Gramophone
PA
PA system
Victrola
audio sound system
audiophile
binaural system
bitch box
bullhorn
cartridge
ceramic pickup
changer
crystal pickup
derived four-channel system
discrete four-channel system
four-channel stereo system
hi-fi
hi-fi fan
high-fidelity
intercommunication system
jukebox
magnetic pickup
monaural system
mono
needle
nickelodeon
phonograph
photoelectric pickup
pickup
public-address system
quadraphonic sound system
radio-phonograph combination
record changer
record player
sound reproduction system
sound truck
squawk box
stereo
stylus
system
tape deck
tape recorder
tone arm
transcription turntable
turntable
communication system
interphone
analog
chronometer
comm
communicator
cordless
directional
doorbell
headset
keypad
long-distance
loudspeaker
microphone
microwave
monitor
navigational
override
relay
stereo-
telephone
transceiver
transmitter
transporter
two-way
wireless