Connection: As the name implies, wireless headphones work wireless. Just connect a transmitter (base) to the audio system to operate the headphones, which are integrated receiver and amplifier. Wireless systems use either infrared transmission (IR) or radio frequency (RF). Infrared systems, which have a relatively narrow (10 meters) require a direct view of the base for good reception. Wireless technology is radio frequency up to 100 meters from the base, even through murs.Câble