Hitachi 12AX7/ECC83 – Short Grey Plate Top Ring Getter Made in Japan
NOS Matched Pair
Original Box
Short Grey Plate
Top Ring Getter
Original Box
Short Grey Plate
Top Ring Getter
Offering a premium New Old Stock (NOS) matched pair of 2 Pcs Hitachi 12AX7 high-mu dual triodes, Serial Nos. 1258002 and 1258003. These precision-engineered Japanese tubes feature Short Grey Plates and a Top Ring Getter. Hitachi 12AX7s are widely celebrated for their low noise floor and smooth, musical characteristic, making them an excellent choice for sensitive audio preamplifier stages. Both units are supplied in their Original Hitachi Boxes and have been precision characterized on the Amplitrex AT1000.
- Type: 12AX7/ECC83 Brand: Hitachi
- Condition: New in Original Box Construction: Short Grey Plate / Top Ring Getter
- Origin: Made in Japan Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12AX7. This pair exhibits very tight matching on tube 1258002, with both triodes measuring.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mAdc) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 1258002 | T1 | 1.2 | 1.0 | 83% | 1600 | 1500 | 94% |
| T2 | 1.2 | 1.1 | 92% | 1600 | 1500 | 94% | |
| 1258003 | T1 | 1.2 | 0.8 | 67% | 1600 | 1470 | 92% |
| T2 | 1.2 | 0.8 | 67% | 1600 | 1400 | 88% |
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