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

Showing 1 response by lowrider57

@bdp24  Joe's tube lore is a good reference, but I would not call it accurate regarding 12AX7s. He makes no pretense saying he doesn't like this tube type. 

Brent Jessee has a better description of sonics on different brands and tube types.

One characteristic of Telefunken is they are extremely linear. So, no sweet mids, but great dynamics and open sonics.
 And it's true that Siemens rival Tely's.