amp
amplifier
analogue
audio
background
bass
black
blues
button
control
device
dial
distortion
electric
electrical
electronic
equipment
fm
guitar
heavy
input
instrument
isolated
knob
levels
loud
metal
music
musical
object
panel
plastic
play
power
retro
rock
round
sound
speaker
spin
stereo
switch
technology
tone
treble
tune
turn
twist
volume