[octagons]

The 16x16 one I bought does. It supports (some form of) HDMI 2.1. The EDID management for all matrices I’ve tested is a bit odd. Pass through doesn’t always work with most monitors, and you can specify a generic EDID from a preconfigured list, upload your own (only one) EDID file, or select “COPY_FROM_INPUT_1” for any or all outputs. The problem is that sometimes you might want input 1 to go to output 2, despite normally sending it to output 1. I have to manually change the EDID profile.

I can’t say how well a balun/extender setup will work but I believe they make boxes that specifically do that - a combination matrix and extender. I have no issues with HDCP. Happy to answer any other questions.

Search Monoprice for Audio/Video splitters but pay very close attention to the description. Make sure you understand the number of sources and sinks it offers.

[octagons]

Also note my response to the other question.