My long previous post appears to have been censored. A "theory" in science is not some sort of advanced type of speculation that seems pretty good but is short of being a fact. This is a common misconception of the general public, where "theory" is often interpreted to mean "educated guess." A scientific "theory" is a framework of concepts, supporting data, and successful predictions. All of the things the Bryston engineers measure when they design circuits -- voltage, amperage, resistance, inductance, capacitance, db levels, etc., etc. -- are part of the "theory" of electronics. But most of you don't doubt for a second that these are valid concepts. There is a zero chance that they will be disproved in this universe. When Mr. Waldrep says "theory," he's not suggesting for a second that he's talking about anything short of a fact.