amplifier
audio
background
black
cable
channel
closeup
communication
concert
connect
connection
connector
connectors
console
control
desk
device
digital
electric
electrical
electronic
electronics
entertainment
equipment
input
interconnect
jack
line
media
metal
mixer
music
network
output
panel
plug
power
professional
receiver
record
recording
socket
sound
stereo
studio
technology
video
volume
white
wire