adjust
amplifier
audio
bass
black
change
close
closeup
control
electrical
electronic
entertainment
equalizer
equipment
four
gain
guitar
horizontal
ivory
knob
leather
level
loud
max
maximum
meter
music
nobody
panel
photo
plastic
power
retro
reverb
rock
rotate
round
settings
sound
stereo
studio
switch
tone
treble
tuner
turn
up
vintage
volume
white