Description
This is a pair of Telefunken esoteric ECC802S tubes
This pair Telefunken ECC802S is a made in the Siemens & Halske plant in Munich. When Telefunken of Western Germany closed their production factories they still had a demand for their ECC802S audio tubes. Where better then to source an alternative from Siemens Halske plant in Munich? And from this plant they chose the best, the famous triple-mica, double post E82CC; one of the finest ECC82. Telefunken ordered a limited supply of these beauties for this Telefunken non-diamond bottom ECC802S. To comply the very strict specification of the ECC802S, Telefunken has undoubtedly used selected versions of the E82CC only. I offer this pair for a lucky audiophile to enjoy!
The etch codes on the glass indicates that both were manufactured in Munich in 1969. The tube has triple mica reinforcement and a round halo getter. The tube has excellent test values that match the factory specification very well and balanced systems. The properties of this tube are widely known. I refer to the many threads on the web for more information.
Note from the web: “This is an E82CC, made by Siemens, and famous for a vivid and clear midband, and perhaps the best dynamics ever. Ever so slightly relaxed on top. Super bass response.”
Sonics
Based on user experiences and my personal observations I would describe the sound character as follows:
- Middle tones: rich, fluid and natural. Especially voices and acoustic instruments can sound beautiful.
- Highs: refined, clean and detailed, without emphatically getting sharp.
- Low range : tight, deep and well controlled. No excessively thick or woolly layer (like e.g. Mullard).
- Spatiality: good depth operation and placement of instruments.
- Micro detail: a lot of nuance in small dynamic differences and instrumental textures.
- Noise and microphone: Can be particularly quiet, with little noise and microphone. Maybe this is due to the double halo support.
Excellent valve, very good in phono stages.
ECC802S: balanced, neutral and smooth sounding with liquid midrange, recommended!
Test method & results
The tubes have been tested carefully with the published Telefunken (and Philips, Siemens, etceteras) test conditions for premium tubes and our sophisticated test equipment. In the Telefunken publications the test values for a new tube and the end-of-life values obtained with the test conditions are specified also. Please read our testmethod for the ECC82 tube family.
Note: The Telefunken test conditions result in lower test results above the rated value and higher results below the rated value than the fixed bias test approach.
The measurement results below show that both systems are matched and balanced. And fulfil the factory specs of a new/NOS tube.
| Valve
V134
|
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
10,3 / 10,4 mA
2,2 /2,3 mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve
V135
|
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
10,3 / 10,5 mA
2,2 /2,3 mA/V OK |
= NOS / NOS
= NOS / NOS
|
Where NOS is : Ia = 8,7 to 12,3 mA, Gm= 1,8 to 2,6 mA/V. End of life (EOL) : Ia = 7 mA, Gm= 1,5 mA/V.
(Telefunken factory test conditions and rated values see test page)
Please read our test and shipping policy before buying !
Summarized description
| Tube type | ECC802S |
| Quantity of Tubes | One pair |
| Brand | Telefunken |
| Manufactured by | Siemens & Halske. Munich Germany |
| Dates | Dø1 # 9L / Dø3 # 9I (1969) |
| Construction | Triple micas, reinforced grey plates |
| Getter Construction | Double posts halo getter |
| Print Condition | Nice; see pictures |
| Box included | Generic vintage Telefunken boxes |
| Equivalent tubes: | E82CC, 12AU7WA, ECC82, 5814A |
| General test results | NOS specs |
Please study photos carefully; what you see is what you get! Ask any questions before bidding. Thanks
