I bought this cable to connect my Apple TV 4K to LG CX and Sonos Arc (via eARC pass-through). This allows me to stream in 4K/Dolby Vision on the TV and Dolby Atmos on the Arc. The picture and sound quality is top-notch, making the HDMI 2.1 cable look quite legitimate at a good price. In short, I am very satisfied with this purchase.