power mic
microgenic
dynamic microphone
magneto-dynamic microphone
gobo
smart speaker
telephonograph
vogad
directional mike
directional microphone
hot microphone
detectaphone
dictograph
bidirectional
ribbon microphone
loud-hailer
jammer
bullhorn
loud hailer
phantom power
public address system
dictation machine
hi-fi
shotgun microphone
laryngophone
scrambler
multimike
contact microphone
microphonograph
push-button radio
electro-acoustic transducer
contact mike
loudspeaker
audio system
sound system
microphoning
radiotelephone
radiotelephony
tweeter
acoustic device
detectograph
boom
wireless telephone
fiber optic microphone
radio operator
rig
roger beep
unmiked
studio monitor
citizens' band radio