Quote:
Originally Posted by AudioGremlin
My recollection is that the 275 does not have user adjustable bias controls. It still doesn't bar you from having matched tubes. Personally I would have the replacement tubes tested
to see how matched they are.
That said I understood the 275 is quite forgiving on tubes however as temperatures are a concern I would be tempted to exchange them for a better matched selection.
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That's very good advise, I wasn't sure about the biasing scheme of the 275. A tube tester will tell all!!!! Being a cautious person I would stick with the factory tubes. I've heard this amp many times and thought it sounded great with original tubes.
