英文關鍵字
abstract
adjusting
audio
background
center
chorus
control
delay
dial
digital
display
distortion
electronic
entertainment
equipment
frequency
fuzz
graphic
guitar
hud
instrument
knob
level
light
listening
media
middle
modern
music
note
overdrive
panel
pedal
radio
receiver
sound
station
stereo
switch
technology
touch
treble
tune
tuner
volume