Mazda ECC81 NOS Grey Plate
NOS Single Tube
Original Box
Double Mica
Grey Plate
Original Box
Double Mica
Grey Plate
Available for purchase is a single Mazda ECC81 vacuum tube. This premium “Thorn” era valve features a highly ruggedized Double Mica construction, Grey Plates, and a Top Ring Getter. The unit is New Old Stock (NOS) and remains in its original blue Mazda factory box.
- Type: ECC81 / 12AT7 Brand: Mazda (Thorn)
- Condition: New in Original Box Construction: Double Mica / Grey Plate
- Origin: Germany Testing: Amplitrex AT1000
Superior Stability: The triple mica spacers provide enhanced mechanical stability, reducing microphonics for critical audio paths.
Precision Laboratory Testing: Fully screened on the Amplitrex AT1000 for Plate Current (Ip) and Transconductance (Gm) against factory targets.
Precision Laboratory Testing: Fully screened on the Amplitrex AT1000 for Plate Current (Ip) and Transconductance (Gm) against factory targets.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mA) | Result Ip (mA) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 2140001 | T1 | 10.0 | 8.6 | 86.00% | 5500 | 4950 | 90.00% |
| T2 | 10.0 | 10.8 | 108.00% | 5500 | 5100 | 92.73% |
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