What are the names of the equipment in the bar, the lights, and so on?
Video device: switcher, projector or plasma or LCD TV, LED screen, digital tube, etc.;
Lighting system: computer shake head lamp, witch lamp, LED PAR lamp, laser light, etc
Sound system: full frequency loudspeaker box, bass loudspeaker box, power amplifier, audio processor (selection), equalizer effect device, frequency divider, mixer, wired and wireless microphone, etc
