Toshiba 12AX7/ECC83 – Triple Mica Black Plate Top Ring Getter Made in Japan
NOS Single Tube
New In Original Box
Black Plate
Triple Mica
Top Ring Getter
New In Original Box
Black Plate
Triple Mica
Top Ring Getter
Offering a rare New Old Stock (NOS) 1 Pc Toshiba 12AX7 dual triode, Serial No. 4666001. This premium Japanese-made valve features the highly robust Triple Mica construction with Black Plates and a Top Ring Getter. These specific design elements provide superior mechanical stability and low microphonics, making it ideal for high-end audio. The tube is supplied in its Original Toshiba Box and has been precision characterized on the Amplitrex AT1000.
- Type: 12AX7 / ECC83 Brand: Toshiba
- Condition: New in Original Box Construction: Triple Mica / Black Plate
- Origin: Made in Japan Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12AX7 . This unit demonstrates strong performance with high plate current readings on both triode sections.
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 4666001 | T1 | 1.2 | 1.8 | 150% | 1600 | 1300 | 81% |
| T2 | 1.2 | 2.1 | 175% | 1600 | 1500 | 94% |
✉️ For technical inquiries, please Email us at [email protected]
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