Big Karan amps


Anyone with experience of the bigger Karan amps.
I am interested in the new 650 Monoblocks.
How does Karan amps sound compared to for example BAT VK-600, Theta Citadels, Ayre MX-R, Burmester, MBL and others?
I have Aerial 20T's.
cappuccino
I have the Karan Acoustics M 1200 monoblocks on my system page, if anyone cares to take a look. I believe this is one of only two pairs in North America.
I have the Karan 450 which I am using with Hovland HP100. I find that this is really not that matching. Anyone has good experiences with other preamplifiers with the 450?

I have also tried the Karan Ref and find that too analytical. Prefer a tube pre to go with the 450.
Does anyone tried the Karan amps driving MBL speakers, in particular the MBL 111?
I'm also considering MBL 9007 and Plinius SA Reference amps.

Any suggestion?
-- Ale