[honcho]

What is the disadvantage of using the DVI output for audio pass-thru only? Just buy one of those Asrock ITX boards and use the DVI out for audio. Cannot understand why is it so much focus on the HDMI output and audio pass-thru when there is very simple solution by using the DVI for audio only instead. Use the HDMI for video and DVI for audio, works like a charm for all formats ...

Is this even possible?
This is exactly what I was looking for in a HTPC. Something like the dual outputs from a stand alone player. One for video at HDMI 2.0b and one for audio at HDMI 1.4 with no video or video downconverted to 1080 or 720.

How would KODI handle this?

The reason for this is my projector is 4K HDMI 2.0b HDR capable but my processor is only HDMI 1.4 at 1080P max.

I've been reading this board as a long time lurker and this is my first post

It's fully possible on Asrock J4205-ITX, this is what i use and others have reported of same working setup as well. My receiver has only HDMI 1.4 and i use the DVI to HDMI output to the receiver for audio. HDMI 2.0 is directly connected to the TV. I have not seen any sync or other issues but i don't use the receiver often ...
Try to search thru this tread some months ago, i think my first report is from late December ...

I know this is a very simple question but something I'm still wondering about...

For example:
Can a PC (with Kabby lake hardware) output 4K HDR out of one HDMI output and also output a downscaled 1080p or lower HDMI audio output through another HDMI output.
Basically the 2 separate outputs that a standalone 4K player has. The second question related to the first is can Kodi be used as the player to support these dual outputs?

I have output 4k directly to my television, and hdmi 1.3 DTS-HD directly to my receiver at the same time.. IN WINDOWS.

It worked, but i had sync and popping issues. I just bought a new receiver, you can get a cheap one with 4k passthrough these days.