Related Clues:

• Person working on a piano
• Phone feature, once
• Erstwhile channel selector
• Turner on a stereo
• Volume knob, e.g
• Old TV tuner
• Transistor radio feature
• Retro phone part
• One tweaking pitches
• Remote precursor
• People are told not to touch it
• Watch face seen in media lately
• Ring a number
• DJ's softening knob
• Face to "watch"?