Related Clues:

• Listening accessory for an iPod
• Advertisement brought in these unusual phones?
• Piece of equipment for a telemarketer
• Leader placed cans
• One of an iPod accessory pair
• Telemarketer's aid
• Listening aid
• One of a pair for a podcast listener
• Jogger's speaker
• Piece of live-stream gaming equipment
• Accessory for a pilot or telemarketer
• Inserted music accessory
• Twitch streamer's purchase that might look like cat ears
• Sound equipment fitted over the ears
• Generator of waves in a canal?