Thanks all; there are no specific speakers that I had in mind, it was a theoretical question, since I have had so many divergent answers from friends about the versatility of a 60 WPC Class A amp with 125 mV input sensitivity that I wanted a consensus, concerning the range of speakers that I could use - I have previously had a thread concerning the other end of the spectrum - 85 db 4 ohm speakers, that I chose the highest sensitivity of speakers that I am aware of, to determine users's experience at both ends of the spectrum.
This all stems from my Denon APL 3910 putting out 4 volts and clipping, as well as a ML 32 preamp clipping Atmas-Spheres when the db gain was higher than 12 - took me weeks to figure out that the input was too high. Long answer, but that is what this is about: trying to tie together inputs, outputs, amp and speaker sensitivities, having been burned twice (but fixed both times). I'll get the answer by taking the amp to an audio dealer with a variety of speakers. But I appreciate all the help. Thanks again.