Description
Unused tubes German army stock !
This pair of Siemens ECC82 tubes originate from the German army (Bundesamt für Wehrtechnik und Beschaffung (BWB)). They are manufactured by the former Telefunken Neuhaus tube plant: Funkwerk Erfurt in Germany. The tubes of this plant are of excellent quality and hence Telefunken, Siemens and many major tube brands sold these tubes under their own brand name. The tubes have rounded plates with 3 holes plates.
The properties of this tube are widely regarded. Please have a look on the many threads on the web for more information.
The tubes have NOS test values that match the factory specification very precisely and they have balanced systems.
Sonics
Excellent valve, low noise, very useful in phono stages.
E82CC: balanced, detailed and solid bass, recommended!
Test method & results
The tubes have been tested carefully with the official Telefunken test set-up and our sophisticated test equipment. Please read our testmethod for the ECC82 tube family. The measurement data below show that both tubes are matched and balanced. And fulfill the factory specs of a new/NOS tube.
| Valve 1
V133 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
10,0 / 10,4 mA
2,2 / 2,3 mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve 2
V137 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
10,5 / 10,0 mA
2,1 / 2,1 mA/V OK |
= NOS / NOS
= NOS / NOS
|
(Telefunken factory specification see test page)
Summarized description
Tube code: ECC82
Actual Brand*: Funkwerk Erfurt
Printed Brand: Siemens
Manufactured in: Erfurt, Germany
Visible Codes: BWB 633 / BWB 633
Production date: Unknown
Plate Construction: Runded grey plates
Getter Construction: Round halo getter
Print Condition: Nice; see picture
Box included: Generic Siemens boxes
Equivalent tubes: ECC802S, 12Au7, ECC82, 5814A, 12AU7WA
General test results: NOS specs
Quantity of Tubes: 2; one pair
