I am surprised that Nelson Pass' FirstWatt amps haven't been mentioned yet. SS amps designed and often built by a master, and intended for sensitive speakers. 6moons has reviewed most of them if you want an idea of the different models' flavors and requirements. I loved the F2J and F3 in particular.
High Sensitivity Speakers that work best with SS
In general, most all "high sensitivity" speakers I have heard or read about seem to do best with tube amps. Is that pretty much always the case? Anyone have experience with any "high sensitivity" speakers that in general work or sound better with SS amps than tube amps ?