amplifier
audio
audio electronics
audio system
closeup
concept
device
equipment
hifi
hifi system
high fidelity
home audio
home use
inaudible distortion
inaudible noise
knob
listening
media
metal
mini music system
music centre
selective focus
shelf stereos
silvery
sound
sound control
sound reproduction
stereo
stereo system
stereophonic
subhigh fidelity
surround sound
vintage
volume button
volume control
volume control knob