i went to roon at last year end
so i have an i7 roon core doing the processing (from @elberoth)
then three branches out
-- optical conversion at switch to optical rendu as roon endpoint driving usb out into dacs downstream
-- uptone etherregen clean (b) side to ifi zenstream as roon endpoint using its cleaned spdif rca out to dacs downstream
-- wifi to node 2i as endpoint, then rca spdif out to dac (as older, former setup as a reference)