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RE: Questions about 6BG6G amp build (schematic) Grommes 216BA

He may not be able to totally dropping the NFB because the transformers have small iron content a lot of time.He could add a 100 resistor in series with the 1k and reinsert the loop between them and add a bypass lytic. That would lower it quite a bit but being the amp also has that 220k to the driver,that tells me they probably did a lot of tweaking to make the amp stable with the existing iron.I'm speculating but it makes sense.

"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

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