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Of course it is

Class A has historically referred to a single-ended stage operating near the center of its conduction window. Such use may not be mandated by the broader definition you prefer, but it represents the original concept to which the delineation of the various classes was applied. No one 50 years ago would have accepted a stage operating at 1/20 of the midpoint as being Class A. If a design needed such reduced power, a smaller tube would have been used. You can attempt to change the meaning of CLass A to apply to such cases, but those of us who know better will always correct your error.


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