Toshiba 12AX7A/ECC83 – Grey Short Plate Top Ring Getter Made in Japan
NOS Matched Pair
New In White Box
Grey Short Plate
Top Ring Getter
New In White Box
Grey Short Plate
Top Ring Getter
Offering a premium New Old Stock (NOS) matched pair of 2 Pcs Toshiba 12AX7A dual triodes, Serial Nos. 4578003 and 4578001. These authentic Japanese-made valves feature Grey Short Plates and Top Ring Getters. Known for their low noise floor and excellent stability, these Toshiba short-plates are ideal for high-fidelity audio applications. Both units are supplied in New White Boxes and have been precision characterized on the Amplitrex AT1000.
- Type: 12AX7A / ECC83 Brand: Toshiba
- Condition: New in White Box Construction: Grey Short Plate / Top Ring Getter
- Origin: Made in Japan Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12AX7A. Both tubes exhibit strong performance, with all triode sections testing at or above nominal transconductance ratings.
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 4578003 | T1 | 1.2 | 1.8 | 150% | 1600 | 1800 | 113% |
| T2 | 1.2 | 1.3 | 108% | 1600 | 1500 | 94% | |
| 4578001 | T1 | 1.2 | 1.4 | 117% | 1600 | 1800 | 113% |
| T2 | 1.2 | 1.4 | 117% | 1600 | 1700 | 106% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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