I run the SonoreUPnP Bridge on an UltraRendu (wired), powered by a UltraCap LPS 1 (dual faceplate for them both).
Just go to ‘Software Manager’ under Apps and under ‘Available Apps’ look for the Bridge application.
Runs perfectly and sounds great.
These are the settings I use on the UltraRendu
and then on Roon
This gives uncompressed WAV output for PCM formats (I find is the best for the NDS) and native DSD for DSD64, DSD128 etc. (again I have found this best over DSD->PCM conversion within the Roon Core).
Given it is an UltraRendu I also have the option of using the USB out, and a USB->S/PDIF convertor as a Digital-input to the NDS, but the UPnP feed to the Ethernet input on the NDS is better.
And of course, if I ever swap out the NDS for a DAC with a USB input.