I have only head them a few times. Typically they were setup as described by Stereophile in that instead of having a bloated bass facsimile like so many 2-ways, the bass is shelved off and is very dry. In a very small room a Dallas dealer had placed them against a wall to get some bass out of them room. It was fine for a demo, but I wouldn’t live with it. It is great Ron17 invested in them; I passed on them not sure I could match them with a sub and play at a decent scale in my room.
I have also heard the A3s, same day as the Carmel 2. The A3 is the more complete as a full range, and they are really good. That day, though, they did not have the refined transparent, electrostatic-like-but-better, hypnotic and well integrated sound like the YGs. The S series is a lot closer. In my limited experience.