Related Clues:

• It produces high sound if turned up
• The kind of sound most hope for
• What sounds great if turned up?
• Good quality sound
• Good quality sound system
• If I follow Planck's constant, it should make all the right noises?
• CD-player ancestor
• Stereo system of yore
• Sound system provided in Hawaiian Islands
• High fidelity
• Sound equipment taken out of church if irritating
• Good-quality sound equipment
• Old audio system
• Audiophile's preference, maybe
• Old stereo