AT-HD41D 4x1 Atlona HDMI with Digital Audio Switch is a high performance HDMI 1.3 switcher with remote. Simply pressing a button on the remote you can select your desired HDMI source to be routed to a high definition display. Switcher is tested to guarantee resolution up to 1080p without signal degradation. Great advantage of this switcher is that you can now route your digital audio though it as well, rather then separately going in to the receiver. With a click of a button you can switch HDMI (video) and optical or coaxial (audio).