Wireless Headphones

Wireless headphones have existed for many years, but have only recently begun to approach the sound-quality of corded headphones Nonportable wireless headphones--full-size models with large base stations that aren't suitable for portable use--employ one of two transmission methods: infrared or radio frequency (RF). Infrared uses pulses of light to transmit signals from the base unit to the headphones, but you have to remain within the line of sight of the transmitter to receive signals. Radio frequency headphones use radio waves to accomplish the same job, and since the radio signals can pass through walls, they generally suffer fewer signal dropouts. Portable wireless headphones utilize either Bluetooth or RF transmission together with a base dongle that one plugs into their phone or portable media player.