Gigabyte Aorus Z390 - no audio

I recently upgraded my computer to Aorus Z390 Ultra MB and i9-9900KF processor. I had been running High Sierra prior to the upgrade - audio worked on the old MB and processor. When I upgraded I lost my audio - no surprise there. I then decided to download Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina thinking maybe the newer OS would get the audio working.

Any suggestions on how to get it running?

Author: @RemarkableVegetable9