After running 7 cables from this box to various 4K HDR TVs, I found that they don't really pass through HDR10 or Dolby Vision. I connected the source, a Sony X800 4K player, directly to each model and the player actually sends HDR10 format and the splitter was just the bottleneck. However, it sent an HDR signal via HDR Blu-ray playback, so TVs defaulted to that color space (BT.2020), but it attempted to extend the DCIP3 color space, which actually hit HDR and the hues at the ad left everyone in the wrong order. I've tried the troubleshooting steps with no success. Just a word of warning, if you want to stream HDR10, it's not supported on Sony, Samsung or LG TVs.
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