rcmmnds
8K HDMI Splitter 1 in 2 Out 4K 120Hz- HDCP 2.3, VRR, HDR, Dolby/DTS5.1/7.1-1x2 HDMI 2.1 Splitter Mirror Display for PS3/4/5, Apple TV, Xbox, Fire TV Stick/Cube, Roku Stick, etc

8K HDMI Splitter 1 in 2 Out 4K 120Hz- HDCP 2.3, VRR, HDR, Dolby/DTS5.1/7.1-1x2 HDMI 2.1 Splitter Mirror Display for PS3/4/5, Apple TV, Xbox, Fire TV Stick/Cube, Roku Stick, etc

comments:

mistersquid (1) on hackernews2w
> I don't know if anybody has managed to figure out how to defeat hdcp higher than 1.4 though.

This works for me: https://www.amazon.com/dp/B08T64JWWT