Sylvania 12AT7 / ECC81 – Black Plate Made in USA
NOS Single
New In Original Box
Black Plate
Big Ring Getter
New In Original Box
Black Plate
Big Ring Getter
Offering a premium New Old Stock (NOS) Sylvania 12AT7 / ECC81 dual triode, Serial No. 2086002. This authentic American-made vacuum tube features high-performance Black Plates, Double Mica spacers, and a Big Ring Getter. The unit is housed in its original yellow and black Sylvania GTE “electronic tube” packaging and has been laboratory tested on the Amplitrex AT1000.
- Type: 12AT7 / ECC81 Brand: Sylvania
- Condition: New in Original Box Construction: Black Plate / Double Mica
- Origin: Made in USA Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters.
Performance: This tube shows exceptional strength, with triode 1 testing at 129% for plate current and 118% for transconductance.
Performance: This tube shows exceptional strength, with triode 1 testing at 129% for plate current and 118% for transconductance.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mA) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 2086002 | T1 | 10.0 | 12.9 | 129% | 5500 | 6500 | 118% |
| T2 | 10.0 | 9.6 | 96% | 5500 | 5300 | 96% |
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