Hitachi 12AX7/ECC83 – Long Black Plate Square Getter Made in Japan
NOS Single Tube
New In White Box
Long Black Plate
Square Getter
New In White Box
Long Black Plate
Square Getter
Offering a premium New Old Stock (NOS) 1 Pc Hitachi 12AX7 dual triode, Serial No. 4975001. This highly sought-after Japanese-made valve features Long Black Plates and a Square Getter. Hitachi’s black plate construction from this era is renowned for its exceptional musicality, offering a deep, lush low end and a clear, detailed top end. This unit is supplied in a New White Box and has been precision characterized on the Amplitrex AT1000.
- Type: 12AX7 / ECC83 Brand: Hitachi
- Condition: New in White Box Construction: Long Black Plate / Square Getter
- Origin: Made in Japan Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12AX7. This unit demonstrate strong transconductance performance, with Triode 2 testing above nominal reference.
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 4975001 | T1 | 1.2 | 0.9 | 75% | 1600 | 1500 | 94% |
| T2 | 1.2 | 1.1 | 92% | 1600 | 1700 | 106% |
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