Infrared Headphone System (320-2052) Features Faxback Doc. # 6831 The Radio Shack Infrared Headphone System uses infrared rays to send signals from an audio source (such as a TV or radio) to special headphones equipped with a built-in receiver. This provides more freedom of movement while you listen and eliminates the need for a wire connection to your audio source. You can use the system in your home or office to send audio signals up to 20 feet. The system includes a transmitter, a mono headphone receiver, a 1/4-inch phono connector, a 1/8-inch phono connector, and an AC adapter. (LB/all-08/23/94)