Having spent the last few days testing Virtuoso, I can confirm that it is surprisingly effective, both on headphones and also Shure earbuds, where the soundstage is quite transformed. I found that most of the benefits seem to be with stereo and mono classical recordings, where the “in the head” experience of many headphones is largely removed, and replaced with quite a convincing binaural soundstage. I also had a brief test with Apple Music on a Mac - the system was able to play 7.1.4 Atmos through headphones and isolate each virtual speaker. So far, for $99, this seems like an audio bargain for Roon headphone lovers.