Ключевые слова: adult, amp, amplifier, audio, audio system, audiophile, carpet, caucasian, enjoying, entertainment, equipment, floor, headphones, hearing, hearing disorder, hifi, hifi system, home, knob, listening, loud, louder, man, music, people, relaxing, room, sitting, sound, stereo, stereo system, system, testing, turning, up, volume, young,