My Pioneer LX58 will pass through 4K video, but strips out the HDR, which to my mind is the most important part of the 4K video Spec. My Pioneer sounds absolutely superb, so i didn’t want to change this after spending £1300 on an new OLED 4K TV. This little box did exactly what i wanted, I now have my Sky Q and 4K Blu-ray player connect to the the HDMI switch, and the ARC connected back to my receiver from the TV, my 4K Blu-Ray player as a separate HDMI audio only output, so I connect this directly to the Receiver. I now have beautiful 4K HDR and fantastic Dolby Atmos surround sound. Easy to install and comes with a nice little remote. Highly recommended.