@PeterA Yes, that's correct, as far as I know.
I heard a number of records on the SP10-R in OMA's plinth. I believe the arm was a Schroeder. I don't recall the cart, I'm afraid. Pretty much everything--Muddy Waters, jazz of various eras--sounded excellent on the SP-10R.
I only heard one cut on the K3: "Billie Jean." I was impressed by the truly rock solid bottom end.
But, again, all of this was through OMA's main speakers, very large horns paired with dual 21" subs. It's an impressive and unusual way to hear recorded music, as the room is almost the size of a movie sound stage. It's just an overwhelmingly big, expansive, and live-sounding room in which one demos these impressive objects. In many ways, it's closer to what you'd hear in a good music club, very clear and real sounding with low distortion. Not a hi-fi sound so much as, yeah, a club sound, in a good way.
I don't know if it's the *best* listening experience I've had--again, it's so unusual--but it was damned impressive.
If I'm remembering correctly--and I could be way off--the K3 costs somewhere around $350K.