Article from: AV Receiver
An audio/video receiver (AVR) (also known as av receiver, wireless av receiver, Digireceiver, wireless tv receiver, video receiver) is a consumer electronics unit used in a home theater. Its primary purpose is to receive audio and video signals from a number of sources and process them to drive loudspeakers and a display. Possible displays include, television, monitor, or video projector while the inputs may come from, television, satellite receiver, radio, DVD players, Blu-ray Disc players, VCRs, and video game consoles. The AVR source signal and other settings, including volume, are normally set by a remote controller.And the wireless av receiver always works with the wireless av transmitter, multi receivers can receive signal from one transmitter.