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Questions about tubes and gear that glows. FAQ

Are you sure about your substitution???

Are you sure that you can substitute a 5AR4 in your amps??? None of the tubes you said worked list a 5AR4 as a substitute or vice versa in my tube data references.

I've been using the new Sovtek and JJ 5AR4's in my Dyna's and have had zero problems with either.


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