220pro: n00b question on the DAC portion and Roon

[Jean-Marie]

Thank you both, I think that gives me enough to work with.

High-jacking my own thread, I have a system config question as well.

My current system fulfills two roles: home theater and dedicated stereo chain for audio only.

I achieve this by connecting a Parasound JC2-BP preamp and a Pioneer receiver through the Parasound's bypass function.
The pioneer decodes surround sound and provides power to center and surround speakers.
Stereo (audio) power is provided by Bel Canto ref1000M monoblocks. Stereo speakers are Marten Django XL
Digtal source is NAS->NUC with Roon ROCK -> Auralic Vega G1 streamer/dac.

Audio stream is either digital (ethernet Nas to NUC to Auralic) or balanced (Auralic->Parasound->Bel Canto)

Theoretically, I could replace the Auralic Vega G1, the Parasound Halo JC2-BP and the Bel Canto monoblocks with a Devialet expert pro (220 or 440)

The question: has anyone used a devialet in such a dual config system and if so, how did you do it?

Yes, many have. 
you can basically configure an entry as a pass through, meaning that it does not apply the preamp attenuation. You can search the forum, it has been described quite a few times. 

Jean-Marie