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Tubes?


I recently came across a few boxes of various vacuum tubes. Is there any way to quickly test whether or not they're still good? I've read stories about tube testers being at the corner five-and-dime, but it seems like those setups are hard to find these days.

The lack of detail in this question is meant as testament to my knowing very, very little about tubes, so I would appreciate any insight.

Thanks!
afranke

Showing 2 responses by albertporter

albertporter's avatar
albertporter
4,949 posts
 
It's also possible the tubes you've found are not worth the trouble even if they test perfect. Of the thousands built, only a double handful remain popular in high end audio.

If you list what you have, I and a dozen others here at Audiogon can tell you if they are desirable. If they are desirable it's worth testing them and putting up for sale or keep for yourself.
albertporter's avatar
albertporter
4,949 posts
 
Here are (in my opinion) the most desirable of the lot:

12AT7 3 SYLV, TUNG, TELEFUNKEN
12AT7WB GE
12AU7 5 AMPEREX (4), RAYTHEON
12AU7A 4 SYLV, RAYTH (2), GE
6DJ8 2 AMPEREX
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