High Sensitivity Speakers that work best with SS

I paired Pass Lab XA 30.5 with Zu Omen Defs (rated at 98dB) and the combination was fantastic. With the 30 Watts from this amp you could easily drive many medium or high efficiency speakers.

Daedalus_audio, it was in Thom-mackis' room that I got to hear and see that. Duke had brought his speakers down the hall and we played them on Thom's M-60s. I pushed the system hard during that audition and found that I could play the system considerably louder, yet the meters on the amps showed that the amps were not working as hard.

Since Duke's speakers were nominally 16 ohms, the meters were more sensitive (should have read higher), yet they were reading lower.

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.