It's hard to compare the two driving platform like this. The dedicated Stax amps are more detailed and clean sounding while the adapters are more dynamic while sacrificing a lot of detail and resolution.
Oh crap, this means I'm now back to the which-dedicated-electrostatic-amp quandry. I've read so much about solid state (kgss) versus tube that my head begins to spin. Used SRM007t? Woo GES? SRM 717/727A? . . . Oh heck, KGBH (really dreaming now..)
Thanks for the honest impressions, sir