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New installation of my A-S OTL amps

Posted by jeffreybehr on June 14, 2019 at 20:36:30:
I have a pair of M-60/3.3s (45 Watts into 4 Ohms) along with a pair of 96dB-sensitive Serenity Super-7 speakers.. I felt they would be an excellent pairing, and they have been; including this combo, my system has NEVER sounded better.. I also have a pair of MA-1/3.1s (135 Watts into 4 ohms) that I bought last year to drive my Quad '2905s.. Both pairs of amps have essentially identical upgrades in coupling and PS-bypass caps, and altho the 3.3s may have less measured distortion according to A-S, I consider the two versions to be equal in sonic qualty.
Altho I have the MA-1s listed for sale, I got to thinking that as often as I change speakers--on average, maybe every two years--and as convinced as I was a couple years ago that I would buy a pair of Revel Ultima2 Salon2s in the spring/summer of '18, that the MA-1s and not the M-60s might be the more-flexible OTL amps to keep.. This afternoon I switched amps and since we in Phoenix are in the armpit of summer AND the A-S OTLs will operate perfectly with fewer than full sets of tubes*, I installed only THREE pairs of output tubes (Winged-Cs this time) in each amp.. Both amps nulled to zero quickly with 6 instead of 14 tubes, and initial listening results are quite positive.
I believe this is going to work! That is, I still have a pair of excellent-sounding A-S OTLs driving my highly sensitive Super-7s, but now I have the option of succesfully driving much-less-sensitive speakers with them in addition to saving electricity money in the summer.. It's a win-win! ... :-)
What do you think?

* while, of course, delivering less-than-specified maximum power