Excellent comments Geoff... I discovered something fascinating with my old X-01 during the weekend... The unit had been sitting for a while on Aluminum-ceramic Nordost Sort Kones: yes, the yield a mild enhancement in resolution/imaging over the X-01's integrated footers.
My X-01 feeds a Rowland Criterion, which feeds Rowland M925 monos, feeding Vienna Die Muzik. Wiring is all Aural Symphonics. Titanium-ceramic Kones under amps and preamp.
I have a spare trio of Nordost Bronze-ceramic Kones, for which I have some historical misgivings because of mixed results on a few SS stereo amps, under which I much prefer the extension and sweetness yielded by the Titanium-ceramic variant.
Anyhow, on a lark, I replaced the Aluminum-ceramic Kones under X-01 with the Bronze-ceramic variants: two in front, just behind the integrated footers, and one in the back, just front of the footer.... There was a nice enhancement in imaging, but treble extension seemed to suffer a little bit.... On a further lark, I added just one Titanium Kone 1.5 inches from the front plate, half way between the left and right.... Bingo! The treble reopened up, without any treble excess... harmonic content, and imaging/staging were further enhanced, with the bass range assuming further gravitas... Yes, the word lushius does come to mind.
On one last experimental lark, I switched Kones.... Bronze under Rowland Criterion linestage, and all Titanium (4) under X-01... Ahg, forget lush... Shrill city without depth... Bronze Kones went immediately back under X-01, Titanium under Criterions.... And all's lushly find with the world once again!
Of course, the new K-0X series is not the same as X-01, but I venture to conjecture: a trio of Nordost Bronze Sort Kones spiced up with a single Titanium Kone under the new players may yield some fascinating results.
Saluti, G.