The 6000N doesn’t seem to be Roon Ready or Roon Tested, see here: Title of Page
In principle, it’s possible to use streamers and DACs with Roon that are not RR or RT, if they have a suitable input, like USB or AirPlay/Chromecast, but the 6000N doesn’t seem to have any inputs as far as I can see in its specifications
The 9000N has become newly Roon Ready,