SIEMENS ECC81 / 12AT7 — Matched Pair (2 Pcs)
Grade: NOS (New Old Stock)
Laboratory Verified
Made in Germany
Laboratory Verified
Made in Germany
Top Ring Getter
Grey Plate
Amplitrex AT1000 Tested
Grey Plate
Amplitrex AT1000 Tested
Up for sale is a precision-matched pair (2 Pcs) of Siemens ECC81 (12AT7) dual triodes, Made in Germany. These authentic German valves feature the classic Top Ring Getter and high-quality internal construction typical of Siemens’ engineering excellence.
This pair has been rigorously screened on the Amplitrex AT1000 industrial tube analyzer. Percentages are calculated against the standard ECC81 factory specifications (Ip = 10.0 mA / Gm = 5500 µMhos).
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 1978052 | T1 | 10.0 | 7.8 | 78% | 5500 | 6070 | 110% |
| T2 | 10.0 | 7.8 | 78% | 5500 | 6440 | 117% | |
| 1978255 | T1 | 10.0 | 7.4 | 74% | 5500 | 6070 | 110% |
| T2 | 10.0 | 8.6 | 86% | 5500 | 6300 | 114% |
Technical Note: 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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