Is Roon app Device Volume required for Roon Readiness?

I do remember something like that, though details are fuzzy. Though I know that UDP was in the mix somewhere. I recall grumbling about it.Thank you Dan.

And I also find the statement above fairly interesting. From that statement, when RAAT came out in v1.2, there were ALREADY Roon Ready devices. John stated above that any such devices were all networked devices, and always have been.

As I recall the term “Roon Tested” came out a good while after “Roon Ready” had been in place for a while. So prior to us having Roon Tested, what were all those approved-by-Roon USB DACs called if they weren’t Roon Ready? I’m asking - of course - because if I were asked, I’d say they were called Roon Ready. But that memory - possibly incorrect - contradicts what @john has said.