High Sensitivity Speakers that work best with SS

NVP, with all due respect, subsequent Watts don't compromise the previous Watt. While one might argue that matching output devices require more effort, the benefits that extra power capabilities offer in an effort to avoid proximity to clipping is well worth the effort. SS amps don't have the bandwidth concerns that come with extra power output that tube amps have.
I believe Nelson Pass's First Watt amps are basically kitchen table experiments done on an appropriately small scale. His more serious efforts($) for Pass Labs typically provide larger power output.

The 16 ohm load would be an easier load to drive for the OTL amplifier thus it's operating more efficiently would be my guess.
Regards,

I wonder whether this is why Lou likes the Modwright KWA150Se with his speakers--it delivers the first few watts in Class A before switching over to Class A/B operation. Given the load presented I wonder if the KWA ever leaves Class A when paired with Lou's speakers. This may have something to do with the synergy between Lou and Dan's designs.

Class A works well with an A class design :)

Unsound, no need for "with all due respect", my comment was certainly not meant as a definitive explanation. (I am in no way qualified to do that, I'm a theoretical physicist/spectroscopiest.) However, I am not saying that subsequent watts compromise the first watt, but rather I am wondering whether the designers of powerful ss amps (e.g. 100 - 200 or more watts into 8 ohms) pay always attention to get the first watt right. It is common sense to expect that an apparatus may not necessarily performed optimally when operating at only 0.01 - 0.1 percent of its capacity. Even the smallest perturbation may be significant in that situation.

I hope Atmasphere (or somebody else) can clarify this question of mine.

Paul