Best power match with Sonus Extrema ?


I am looking for the best power to my new Extremas.
I use PSAudio PWDII and a Macintosh c2200 pre.
I would like to get the most neutral and detailed sound
I tried a few big "names" (Krell, ML, Manley) - no success.
Please let me know your advice.

Thanks,

Amnon
amiglick
I used to own the Extremas and powered them with Mark Levinson 20.6 mono amp. The combo was awesome. I regret selling the Extremas. The person who I sold the speakers uses big McIntosh SS mono amps.
Sorry...for clarity's sake, i meant to type "...the Extrema is quite different from the Stradivari". i was referring to the fact that the Gryphon Antileon and Strad worked very well together. I do think the Extrema is slightly different as with the rest of that generation Sonus Faber. Still think Gryphon would be excellent, but note the differences in the 'voice' of the 2 speakers.
The Bel Canto REF 500 MkII are really nice. They sound similar to tubes but are class D. Very cool running and musical. Also Ayre electronics sound nice. I recently matched the Bel Canto with the Cremona M with excellent results.
Agree with lloydelee that the Gryphon is a great match with the Extremas. I just acquired the burmester 808 and 911 monos and they are also a superb match for my extremas. Have never heard the extremas sound so good.