Using Nagra VPA to drive Soundlabs

Has anyone tried to drive a load such as a Soundlab electrostat speaker with the Nagra VPA amps? Can you obtain normal listening levels?
I would recommend a minimum of 100 tube watts to drive the speakers well.

Disclaimer: Sound Lab dealer
You're welcome, Dcaudio. If you have any further questions or are looking for suggestions of tube amplifiers to drive Sound Labs, feel free to contact me, since I know of several. I'll try hard to avoid any sales pitches.