which tube mono blocks?


I run electrostatics that are 4Ohm @ 86dB. I currently use 200w Class A SS mono's. Which tube amps should I get to try?
128x128jtwrace
11-20-08: Atmasphere
Darkmoebius, just for the record, I stated that about **all** amplifiers, tube *or* transistor!
Thanks for setting the record straight, I had a feeling I was getting something wrong.
The best options have been mentioned Atma-Sphere MA2, Wolcotts, big VTLs; all will be costly...Cheers,

Spencer
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?