Originally Posted by JohnnyCrash
[b]680 and 820 ohm resistors should be available, but as with SE cathode biased, soundwise it might be different than typical Champs. Functionality-wise it seemed to have never been an issue with the "incorrect" values Champs have always used with modern voltages.
I've got a 680 ohm Ohmite in my '67 Champ, but I'm running an old Sylvania 6V6. AND...I'm hitting it with a Copper Cap, since glass rectos are about as useful as chrome bumpers on a grizzly bear in a SE amp. I've got 1K on my screens and an extra 10K dropper for the pre sections, but the mains voltage is "up there."
...I really love the tones of that old Sylvania tube, though. It will be a sad day when she's used up.