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04/19/24 at 20:45:44 

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274b (Read 2586 times)
Seasoned Member

Posts: 285
05/25/12 at 19:36:28
Does anybody know if the 274B can be used with the Torii?

I have a friend who wants to bring them over and try them out. But I am worried about this:

Note(*): 274B is direct heating tube. The indirect heating 5AR4 may turn on slower, however, people who buy 274B is for its superior sonic performance. To fully utilize its benefits, it may requires first stage capacitor (capacitor input) to be less than 10MFD, or would shorten the 274B life span (very much like smoking is bad for your health). It would not be a problem with common choke input. Please consult to your amplifier maker or refer to a tube manual.
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