The HDMI™ 4X1 Quad Multi-Viewer with seamless Switcher is a high performance 4 by 1 Quad Multi-Viewer with seamless switcher. It supports four HDMI™ input sources to be displayed on one screen with three multi-view modes. As a switcher, it can also seamlessly switch the four HDMI™ input freely. The product can be controlled by various ways, through the front panel button, IR control etc. The product provides an S/PDIF link to output the HDMI™ source audio at the same time.