Telefunken ECC82 / 12AU7
GREY PLATE | DIAMOND BOTTOM | MADE IN GERMANY | MATCHED PAIR
Diamond Bottom
Grey Plate
Matched Pair
Up for sale is a world-class matched pair of Telefunken ECC82 (12AU7) vacuum tubes, authentic West German production featuring the legendary Diamond Bottom logo. These specimens utilize Grey Plate construction with Top Ring Getters, offering the clinical accuracy and transparent musicality for which Telefunken is world-renowned.
Precision tested on our Amplitrex AT1000 digital laboratory system, the results below utilize the Percentage Method against original factory design-center specifications (Ip = 10.5 mA / Gm = 2200 µMhos). This pair is exceptionally well-matched, providing a symmetrical stereo image for high-end audio applications.
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #2017018 | Triode 1 | 10.5 | 9.6 | 91.4% | 2200 | 2200 | 100.0% |
| Triode 2 | 10.5 | 10.0 | 95.2% | 2200 | 2000 | 90.9% | |
| #2017025 | Triode 1 | 10.5 | 9.7 | 92.4% | 2200 | 2110 | 95.9% |
| Triode 2 | 10.5 | 9.8 | 93.3% | 2200 | 2100 | 95.5% |
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
Note: Extended area surcharges may apply for remote addresses; please confirm before checkout.
Quality Verified Since 1970
Specializing in thoroughly screened vacuum tubes with an inventory of approx. 300,000 units.
Testing equipment includes Amplitrex AT1000, Hickok 752a, and AVO Type 160.
Custom duties and taxes are the responsibility of the buyer in their country.
Support: [email protected] Precision Verified — NOS Audio Tubes
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