Life of a 12AT7 Tube
Sep 3, 2009 at 5:05 PM Post #2 of 2

xaval

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Lasting life a tube is pretty uncertain... I have never had a 12AT7 die of old age in my hands, so this means that it'll last quite a few years. As with any electrical appliance, you should turn it off when not working for longer than a day imo. Personally I never leave any of my gear on longer than needed.
 

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