Ключевые слова: amplifier, amplify, audio, background, broadcast, cable, channel, communication, connect, connection, connector, control, device, digital, electric, electrical, electronics, entertainment, equalizer, equipment, frequency, industry, input, interconnect, jack, knob, line, loud, metal, mixer, music, musical, network, noise, output, panel, plug, power, professional, receiver, record, recording, socket, sound, stereo, studio, surround, technology, telecommunications, volume,