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RE: class A

I really don't need to go through this again but Class A is much more than just whether or not the tubes cutoff.

Class A is about loading, load lines, linearity, bias points WRT the dynamic curve, the dynamic curve being the straightest possible for the chosen tube and natural symmetry of each tube's output waveform, etc.....not just cutoff.

There is always some leakage current so if cutoff is the only criteria for Class A then all amplifiers are Class A.

So cutoff is really just a red herring in the discussion.

Let's just leave it at that. You look at it your way and I look at it my way.

A lot of us listen to amplifiers that are biased in the middle of a very straight dynamic curve and have symmetry without the use of any feedback at all. They adhere to the classic, full meaning of the term "Class A" (1 or 2).

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

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