Hitachi 12AX7 NOS Matched Pair
NOS Matched Pair
New In White Boxes
Grey Plate
Square Getter
New In White Boxes
Grey Plate
Square Getter
Offering a high-quality New Old Stock (NOS) Matched Pair of Hitachi 12AX7 dual triodes, Serial Nos. 4668001 and 4668002. These vintage Japanese tubes feature Grey Plates and the desirable Square Getter construction. This pair is exceptionally well-matched, making them ideal for high-end stereo preamplifiers or phase inverter stages where balanced performance is critical. Both units are supplied in New White Boxes and have been precision characterized on the Amplitrex AT1000.
- Type: 12AX7 / ECC83 Brand: Hitachi
- Condition: NOS in White Boxes Construction: Grey Plate / Square Getter
- Origin: Made in Japan Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12AX7 (Ip=1.2, Gm=1600). Tube 4668001 is perfectly balanced with identical results on both triodes.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Triode | Parameter Ip (mA) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 4668001 | T1 | 1.2 | 1.5 | 125% | 1600 | 1800 | 112% |
| T2 | 1.2 | 1.5 | 125% | 1600 | 1800 | 112% | |
| 4668002 | T1 | 1.2 | 1.2 | 100% | 1600 | 1800 | 112% |
| T2 | 1.2 | 1.0 | 83% | 1600 | 1500 | 94% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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