The ANI-QUAD-LITE is a high performance 4x1 Quad Multi-Viewer with seamless switcher. It supports (4) high definition input source displays on one screen and has (3) multi-view effect modes. As a switcher, it can also seamlessly switch the (4) HD inputs freely. This unit can be controlled via front panel button control, IR control and RS-232 control. This product provides a S/PDIF link to output the HDMI source audio at the same time. This product has a 3 year warranty.