Ключевые слова: acoustic, amp, amplifier, audio, background, bass, beat, big, black, box, club, communication, concept, concert, dark, digital, disco, electronic, entertainment, equipment, frequency, listen, loud, loudspeaker, modern, music, musical, object, party, play, power, professional, radio, rock, signal, sound, sound system, speaker, stereo, studio, sub, symbol, system, technology, treble, voice, volume, wave, woofer,