I have three amps, the “biggest” being rated at 6.5 watts per channel (parallel single-ended 2a3). I bought a pushpull 349 amp from an Italian builder. I had the amp for a couple of years and had no idea of its output capability. When He came here for a visit, I asked him, out of curiosity, what was the output capability of the amp. I could see that he was annoyed by such an irrelevant question; he thought for a brief moment and threw out a number—around 5.5 watts.
30 to 50 watts seems to be all I desire
Weird, but in my small listening room (12x16) no matter the speakers used, to a T they all can be driven quite superbly with amps in the 30 to 50 watt range. This includes the Maggie 1.7.
I had a few 200 watt amps in rotation but took them out for now because I never got past about 8:00 or at most 9:00 on the preamp, and oftentimes it was around the 7:30 mark.
So I personally don’t buy into the lower efficiency speakers needing gobs of power to sound good. Caveat: Listening to mainly Jazz at volumes less than 85db, normally.
Cheers, all.