I seldom write, though HAVE read almost all posts on this Topic here.
Historically, have both EMM Labs XDS1v3 ( updated from v2 ) then Nagra Tube DAC w Classic PSU. Running XDMS v81 now into Nagra Tube DAC, and previously Roon into EMM ( Meitner driver ), then also updated manually to Roon v.1353. Also couldn't access any DAC on Roon, kept Audio Device ( DAC )"disappearing",...until I realised that Ed had selected as Nagra Tube DAC as Taiko Audio Device , so Switched Nagra Tube back ON and rebooted Taiko.
Then had to go back to Roon Settings Audio and VERY quickly grab Taiko-Nagra ASIO driver in Roon , activate it, then BOTH drivers (ASIO), and select the Taiko-Nagra . Lo and behold...both were available to freely select between them, within Roon. AND the previous XDMS selected change to Roon ( on Extreme Player settings ) was auto-selected back to XDMS!! ( without me intervening)
Now listening to both Roon into EMM and then Roon into Nagra ( from Roon v1353 on Taiko ), sounds different of course though both better ( system and DACs produce slightly different sound pictures, both great IMO ), and XDMS v81 into Nagra sounds VERY close to Roon v1353 into Nagra Tube DAC w Classic PSU.
Await the new "fix " from Taiko ( Ed ) tomorrow, looking forward to it !!
Anyway, thought I would mention this, as there seem to be alternate ways to solve some problems, but I sure do need help from Taiko a lot with these rapid-fire updates from everywhere .
M2m