Ключевые слова: amp, amplifier, amplify, audio, black, buttons, channels, close, closeup, concert, connection, control, deck, desk, electric, electronic, equalization, equipment, frequency, guitar, hertz, indicate, level, light, loud, many, mix, mixer, music, old, player, plug, record, regulator, rock, sound, stage, stereo, studio, tone, tune, volume, waves,