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Telefunken Tube Information Sources?

Can those who are deep into vacuum tubes direct me to the best (The best Jerry, the best) sources of information on small signal Telefunken tubes, particularly the 12AX7 and 12AT7? I see them priced from reasonable to VERY expensive, and I don't even know the desirability of the ribbed vs. smooth plate versions. I gotta finally educate myself!
128x128bdp24
facten
2,878 posts
 
Here's the link to Brent Jesse's website , you can click on the tube variant you are interested in and he gives insights into the respective tube family as well as on the tube brands for that tube type, and availability. I am only a customer. Hope it helps
http://www.audiotubes.com/
bdp24's avatar
bdp24 OP
9,792 posts
 
Great, thanks. I've seen Brent's name mentioned often as one of the couple of best sellers of vintage and rare tubes, glad he also provides knowledgeable info on them.
mktracy's avatar
mktracy
91 posts
 
Here's a great link that covers all signal tubes. It's been around for quite awhile but has great info on tubes. I've used it for years and got alot of info. Its Joe's Tube Lore.
https://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html
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