Tronal 12AT7 / ECC81
RING GETTER | MADE IN GERMANY | NOS SINGLE
Ring Getter
NOS Condition
Amplitrex AT1000
Up for sale is a premium vintage Tronal 12AT7 (ECC81) dual triode, precision-engineered in Germany. This unit features the classic Ring Getter and is known for the high-durability construction typical of German valve manufacturing.
Precision tested on the Amplitrex AT1000 digital laboratory tester, the results below utilize the Percentage Method against original factory design-center specifications (Ip = 10.0 mA / Gm = 5500 µMhos). This tube displays strong transconductance and reliable performance characteristics.
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #3982001 | Triode 1 | 10.0 | 6.8 | 68.0% | 5500 | 4800 | 87.2% |
| Triode 2 | 10.0 | 9.4 | 94.0% | 5500 | 5290 | 96.1% |
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
Custom duties and taxes are the responsibility of the buyer in their country.
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