Ediswan ECC81 / 12AT7 NOS Single Tube – Long Grey Plate Made in England
NOS Single
New In White Box
Long Grey Plate
Top Ring Getter
New In White Box
Long Grey Plate
Top Ring Getter
Offering a premium New Old Stock (NOS) 1 Pc Ediswan ECC81 (12AT7) dual triode, Serial No. 4525001. This authentic British-manufactured valve features Long Grey Plates, Double Mica construction, and a Top Ring Getter. The unit is housed in a clean white protective box and has been laboratory tested on the Amplitrex AT1000 Digital Tube Tester.
- Type: ECC81 / 12AT7 Brand: Ediswan
- Condition: New in White Box Construction: Long Grey Plate / Double Mica
- Origin: Made in England Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters.
Performance: This tube exhibits strong, balanced transconductance, testing at 5400 uMhos and 5500 uMhos (100% of spec).
Performance: This tube exhibits strong, balanced transconductance, testing at 5400 uMhos and 5500 uMhos (100% of spec).
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 4525001 | T1 | 10.0 | 8.8 | 88% | 5500 | 5400 | 98% |
| T2 | 10.0 | 9.8 | 98% | 5500 | 5500 | 100% |
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