audio club dee jay disc jockey dj electronic electronics mix mixing music nightclub scratch scratching stereo stereo equipment turntable turntables amp concert equipment pre amp sound board soundboard mc music equipment party strobe strobe light cable connect connection fi fit golden hi jack loudspeaker pin plug sound Speaker wire acoustics amplifier audition broadcast broadcasting commentator communication concept device entertainment increase instrument interview journalism live media micro microphone old style professional public Recording reinforce speech station studio technology transmitter transmitting tv voice volume analogue backdrop background bass computer digital electricity equaliser graph graphic green hardware hi-fi illustration level light meter noise oscillate oscillating oscilloscope output pattern power radio red software television transceiver treble Tuner unit variation vector visual voltmeter wave yellow