I bought one of these recently. Works perfectly fine and pretty easy to use as an HDMI switch. It’s just not as much of an improvement to the viewing experience as I had hoped. I have a 3-bulb light tree on either side of the TV, plus a light bar pointing up and one pointing down on the back of the TV, all controlled by the sync box. The only time it served as a true enhancement was while watching Stranger Things. When the lights flickered on the screen, MY lights flickered the exact same way, which was creepy as hell (thus very effective). So, definitely watch Stranger Things with this on. Otherwise, I’ve stopped keeping it on during movies. Again, not because it’s bad, but because it just doesn’t really make it better, either.