Review on gofanco 4K HDMI 2.0 Repeater & Retimer | HDMI Signal Booster & Extender up to 4K @60Hz | YUV 4:4:4, HDR, HDMI 2.0a, HDCP 2.2, 18Gbps, CEC Pass-Through, Cascading (PRO-HDrepeat) by Kevin Graham

When I was remodeling my house a few years ago, I buried the best HDMI cables I could afford at the time in the wall. Now, a few years later, and after switching to a new 65 inch OLED TV, the picture of all my AV components connected via wall cables "sparkles". This was quite annoying and after some research it turned out that I needed "High Speed HDMI Cable" or Fiber Optic HDMI Cable. Now that I had my cables hidden I couldn't rip them out and replace them. I was skeptical because of the price and ease of installation, but I just hooked it up with the right cables and powered it via USB. The picture is now perfect and crystal clear. I am very impressed. Words (like IN or OUT) on the device itself. Images with arrows only. I followed what I thought was logical and it didn't work. So I flipped it and it worked fine. So that's the only downside, but not a big deal. Otherwise perfect and highly recommended!