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Unexpected longevity

About 18 years ago I had my McIntosh mc275 restored at Audio Classics. A quad of Svetlana Winged C 6550 were installed. Totally unexpected by me, those tubes are still doing fine. A quad of nos Sylvania waits for their turn.


Your interest may vary but the results will be same. (Byrd 2020)

I can't compete with the dead. (Buck W. 2010)

Cowards can't be heroes. (Byrd 2017)

Why don't catfish have kittens? (Moe Howard 1937)


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