英文關鍵字
acoustic
adjusting
aluminum
amp
amplifier
amplify
audio
audiophile
band
blues
closeup
component
concert
connection
control
electric
electrical
equipment
gold
guitar
hobby
input
instrument
jack
jam
jazz
knob
led
level
loud
maximum
motion
music
musical
panel
performance
plug
power
professional
rock
sound
speaker
stereo
tone
turn
volume