英文關鍵字
music
vu
meter
volume
level
analog
sound
audio
control
electronic
indicator
studio
arrow
equipment
stereo
db
needle
vintage
dial
amplifier
scale
technology
peak
amplify
display
measuring
amp
signal
old
70s
entertainment
maximum
amplitude
sync
play
electrical
information
noise
aluminium
dashboard
player
deck
decibel
classic
tape