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Re: Telefunken 12AT7/ECC81 Tubes

209.240.222.132

Posted by P-90 on June 17, 2002 at 14:10:51

In Reply to: Telefunken 12AT7/ECC81 Tubes posted by Chris Spafford on June 17, 2002 at 13:18:39:

The 1972 Telefunken Taschenbuch has type ECC801S/6201 (Z) reliability (LL) long life (To) tight tolerances (Sto) vibration and shock proof (Spk) cathode free from interface

Valvo 1971 Taschenbuch has type 6201
Farbserie, Blaue Reihe:Rohren fur Luft- und Seefahrt
All the same qualifiers less LL, plus Heizfaden-Schaltfestigkeit,
which I think means won't crap out in hot party kits.
I've got Amperex's around, can't remember the factory codes.

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