Telefunken ECC82 / 12AU7
DIAMOND BOTTOM | LONG PLAIN PLATE | MADE IN GERMANY | MATCHED PAIR
Germany Made
Diamond Bottom
Long Plain Plate
Up for sale is a matched pair (2 pieces) of legendary Telefunken ECC82 / 12AU7 vacuum tubes. These are the authentic Diamond Bottom versions, featuring Long Plain Plates and a Ring Getter. Known for their surgical precision and unmatched transparency, Telefunken tubes are the ultimate choice for critical listening in high-end audio systems.
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).
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #2338015 | Triode 1 | 10.5 | 9.0 | 85.7% | 2200 | 2000 | 90.9% |
| Triode 2 | 10.5 | 9.6 | 91.4% | 2200 | 2000 | 90.9% | |
| #2338010 | Triode 1 | 10.5 | 9.4 | 89.5% | 2200 | 2300 | 104.5% |
| Triode 2 | 10.5 | 6.8 | 64.8% | 2200 | 2160 | 98.2% |
⚠️ 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 tested and screened quality vacuum tubes.
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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