rPi to something 4k?

Anyone have a cheap option out there that they’ve come up with to run Plex stably and has the ability of all the 4k and audio pass-through glory possible?

I’ve run the rPi for years and it’s been great. However, I’d like to setup something that will handle 4k and what not now that I have a 4k TV hooked up to the ole 4K Denon AVR.

currently, there is only this for cheap-ish

if you find a cheap device which can run Kodi, you can use that with the Plex4Kodi Add-On.

The more expensive option would be a nVidia Shield