Hi- Obviously airplay is out, so I guess there aren’t any other options other than Merdian bridges?
You can stream from a Core to a Remote and then connect to a DAC.
You can also stream hi res to a Squeezebox including DSD with the EDO plugin. Users have got Squeezelite on a Raspberry Pi working (no Roon Support available for this).
Also RoonSpeakers and RoonRemote devices, when available of course.