The Audio Visual Receiver or AV Receiver as it's more commonly referred to is the central component in a home cinema setup. All your source devices such as SKY+ box, BluRay DVD player, Playstation 4, XBOX ONE simply connect via HDMI cable direct to the AV Receiver. One single HDMI cable then comes out of the AV Receiver and connects to your home cinema projector or LED TV HDMI input. To view the relevant source, you then switch between them via the AV Receivers supplied remote control. Some models even offer control of the unit from a smartphone or tablet.