Sold separately or as part of the WAS1 transmitter/receiver combination, the receiver can be used to accept the audio signal from the WSt transmitter plugged into your source devices. All your source device needs is a USB socket or headphone socket!
The receiver can be connected to your existing audio equipment (with audio input) to receive the audio signal. For example, transmitter connected to laptop/Mp3 player and the receiver connected to AUX IN on an amplifier. The distance between the transmitter and receiver can be up to 25 meters. The system is very robust and not prone to interference or audio signal delays.