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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Tungsram 6922s or Tesla E88CC posted by Mr_bill2 on April 27, 2010 at 05:41:39:
Mr bill2,
In 2005, I tried a pair of Tungsram red label E88CC as the SP10 line stage gain tubes and was so impressed I bought 28 NOS from Zeitmann in Budapest. These included test results and the month and year of manufacture, which included from 1968 to 1979. The red label is supposed to denote military issue and the yellow label for consumer use.
I believe Zeitmann is still selling both the Tungsram and the Tesla you mention, but I have not tried the Teslas.
In December, 2009, I changed the 6- Sovtek 6H23n-EB (6922) from 1990 that were the non-gain tubes in an Audio Research SP10 preamplifier. Four of the six gain tubes- 2 of 4 phono stage and the 2 line stage tubes were changed for Valvo E188CC's (7308) from 1963-65.
SP10 tubes:
V1-V2 > Amperex E188CC, 1964 [phono gain]
V3-V4 > Valvo PQ E188CC, 1963 [phono gain]
V5-V8 > Tungsram E88CC, 1968, 1970
V9-V10 > Valvo PQ E188CC, 1965 [line stage gain]
V11-V12 > Tungsram E88CC, 1969
The Tungsram is supposed to be copied from the Siemens- one of the best- As I have Some Siemens also, I can say the Tungsram have a similarly focused and energetic sound. These are articulate, dynamic, open, very quiet, have well-balanced sections, seem well-made, and have a reputation for being very tough- recommended for two of the preamps that pushing them along- the Audio Research SP10 and the Audible Illusions Modulus preamps. AI has or had a tubes recommendation page on their site suggesting them among the NOS.
The Tungsram I would place among the top tier of E88CC/6922's. They are good enough I feel guilty that their sonic qualities are wasted as cathode followers and the like- better to use tested- and cheaper-EH6922. And, given the stupidly high prices of NOS E88CC, the Tungsram are among the better values. I'm very pleased to have a life-time supply!
Cheers,
Bambi B
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Follow Ups
- Tungsram E88CC - Bambi B 08:41:30 04/27/10 (4)
- RE: Tungsram E88CC - Chuck Y 08:00:24 04/30/10 (3)
- Trying the Tungsram E88CC in the Audio Research SP10 - Bambi B 15:27:30 05/02/10 (2)
- RE: Trying the Tungsram E88CC in the Audio Research SP10 - Chuck Y 16:45:14 05/02/10 (1)
- Cartridge change............... - Chuck Y 08:27:08 05/05/10 (0)
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