- Apr 6, 2018
- Alfred, NY
That depends on topology. True for Futterman, not true for Circlotron or other true push-pull amps.FWIW, OTL amplifiers are inherently asymmetric; positive excursions to speakers will mismatch negatives, at least for source impedance,
even with carefully matched vacuum tubes, which do not stay matched with any amount of aging.