The device is one 3PORT HDMI switcher that can do switch any one of the three input HD source to one HD display. It supports the feature of PIP, ARC, 4K,3D and also it can do audio extract by the Toslink port and LR port. By the ARC feature of the device, you can return your TV audio back to the AV receiver, by the PIP feature, it can choose the input source by check the small window picture at big display side.
