As an aside, and in the intrests of confusing the matter more, class "A" single-ended amplifiers (they can be tube or solid state) do not exhibt crossover distortion at all. There is no division of the 'positive' and 'negative' portions of the audio signal as in a class "A/B" push pull amplifier, it's one unbroken wave. There's no low level crossover distortion to be had, so this type of amplifier is especially useful for very high efficiency speakers such as mine. I use a class "A" single ended triode tube amplifier for my high frequency horns: it puts out only five (!) watts, but I would never even need that much power, given the efficiency of the horns.

Then there's class "A" push-pull amplifiers, but I'm not going to confuse matters too much

[This message has been edited by soundhound (edited January 24, 2003).]