A relevant aspect of the DCS Vivaldi playback is the way it brings the acoustics of the recording in your room, replacing the feeling of space that we are used to perceive in the room.
With many recordings (but not all of them) when it starts playing I can not avoid a feeling of surprise - it seems that the sound is not coming from my usual speakers and system, the sound seems much more solid in a different venue. After some seconds I get used until next recording ...
Although this happened sometimes with previous players, the frequency and intensity of this effect is now much greater.
Just interrupted the listening of Debussy "La Mer" (BSO, C. Munch, XRCD2) to write this post.
I have agree with you here. And very well put. The Vivaldi seems to morph your listening room into the venue where the recording was done. You focus less on the "sound quality" and more on the "musical engagement and enjoyment"
I'm listening to Art Tatum/Ben Webster quartet on Phoenix Records. Recorded on 9/11/56. Pretty sure this is a mono recording-but the sense of space is amazing. Sax out front...drums way in the back...Piano/Cello in the middle. It's redbook cd i'm up sampling to DSDx2 Filter 5.