Related Clues:

• Chap notices alien receiver
• One of a music fan's pair
• AirPod, for example
• Principal decided to provide piece of audio equipment
• Audio equipment offering choice of call, character phoning home
• Chief group supplying item of audio equipment
• Audio device connecting two parts of plant
• Apple AirPod, e.g
• Audio equipment these days not half complicated
• AirPod, e.g
• Small headphone
• Tiny listening device
• Something a telemarketer wears