which tube mono blocks?

Canary Audio CA-160 monoblocks. I am using these to power Piegas, which is no small feat. These are powerful EL34 based amps that should do what you need.

Shakey

What do you guys think of the Van Alstine Ultra 550? Can it compete with any of the above mentioned products?

11-23-08: Jtwrace
What do you guys think of the Van Alstine Ultra 550? Can it compete with any of the above mentioned products?

Not exactly an apples-to-apples comparison what with the VA Ultra 550's output being power MOSFETs instead of tubes.

These: (http://www.audiogon.com/cgi-bin/cls.pl?ampstube&1232672742&/Antique-Sound-Lab-hurricane-mo) Some info: (http://www.vacuumtube.com/antiquesoundlabs.htm) BTW: The amps listed are not mine.

Oh well, its easy - look at one of Joule-Electra OTL monoblock (or AthmaSphere) you can afford and the end of it. If you never matched OTL with electrastatics then you never been in heaven!

Good Luck!