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RE: simple answer: no.

Posted by Dave Cigna on August 1, 2007 at 16:24:48:
"...the driver should be a differential amplifier (the so-called Long Tail Pair...). This insures that each power tube sees the same number of stages."

But they wouldn't and that's my point. In the drawing above, the signal that arrives at the grid of V3 goes through V1 first. The signal at V4 goes through V1 *and* V2.

The AC voltages assume that V1 / V2 would have a gain of 20 in an ordinary common cathode circuit (same operating point, load, etc, blah, blah.)

-- Dave