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Original Message

RE: NYAL OTL 3

Posted by Ralph on November 23, 2010 at 08:53:07:
Don't throw that tube out- get it tested on a tube tester. It might be that it conducts harder than the others but is otherwise OK.

It is a very good idea to use matched tubes BTW. This amp *should* have separate bias controls for each power tube. But is one thing to have all the tubes set properly at idle, its quite another to have them all working together at full power. That's why you want to use matched tubes.