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Second Eli's suggestion.

Probably the best AB1 operating condition for 6BG6G pentodes is 750 V 30 mA plate, 350 V regulated screen. A lot of power with very low open loop distortion. The only caveat is 10-12K output transformer. If you have super-6BG6GA tubes, those can be taken even further to 800-850V, 400V, and 40 mA, with even better results.

No 6L6 version is capable of pulling such stunts.



Edits: 05/24/17

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  • Second Eli's suggestion. - sser2 22:55:38 05/24/17 (0)

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