Best power for 10,000

Ludoe, there are better sounding amps out there than the Pass 600s doing the comparisons using Avalon Osiris and Sound Lab Ultimate One speakers....

Bwhite gets it dead on at this price point.

If you are looking for pure music reproduction, well...
I've listened to the new Linar 250i amp with the new linar preamp and i can tell that they both are a must to consider when searching for very top quality gear.
They cost $10750can. (US$7690) together and they can easily
be compared to much more expensive gears.
I bought the Linar 150 in 4 channels configuration
with the preamp in order to bi-amp my BESL S5 full range speakers that i'm presently building.
The 150 is presently used on some small french "Pierre Étienne Léon" monitors and using a DVP-S9000es and the sound and stereo image is incredible, the quietness in the background of the music is first class, i even enjoy my cheep $100 Kenwood digital tuner now with this amp and preamp !
I've replaced a good Copland CSA-28 hybrid integrated amp
and the Linar have much more life in the sound, much more powerfull and the pleasure to listen to music is increased
a big step up. I had first class service from the Linar team
too.

Run, don't walk, to listen to the Edge NL-10. You can find one used (rarely, but it happens) for around 6k. I owned Pass X250 immediately before it, and think it would be a good choice as well. Both are un-harsh, powerful, and extremely well-made.