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
Shakey
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?