In Reply to: How often do you roll? posted by audiophilewannabe on December 29, 2021 at 04:41:05:
There has to be a reason for rolling tubes, and nothing like 100 hours or anything. You make an educated guess about a substitute and if you have one or some, you try them. I've done shootouts of 12 or more tubes like 5U4G just because I have a few.
The important thing is to make sure the substitute is a true equivalent of what the designer has specified. If in doubt look up all the data on Franks tube pages. You do need to understand tube circuits to do this, though.
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Follow Ups
- Whenever I have something I want to try! - andy evans 13:52:39 12/29/21 (0)