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RE: Anyone try undadjustable fixed bias?

Posted by FenderLover on September 1, 2015 at 07:45:03

In Reply to: Anyone try undadjustable fixed bias? posted by DAK on August 30, 2015 at 23:19:41:

For those vintage amps with "fixed," fixed-bias --- good to check the actual idle current draw. Often higher than nominal, prolly due to higher outlet voltages seem to effect the B+ more than the C-.

Adjustable bias supply is the way to go. As not all output tubes (of the same type) draw the same current. Even brand new.

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