NEC 12AX7 NOS Matched Pair – Black Long Plate Top Ring Getter
NOS Matched Pair
New In White Box
Top Ring Getter
Black Long Plate
New In White Box
Top Ring Getter
Black Long Plate
Available for purchase is a premium matched pair of 2 pcs NEC 12AX7 dual triodes. These highly regarded Japanese Made valves feature the rare Black Long Plate construction and a Top Ring Getter. Both tubes are in New Old Stock (NOS) condition and come in white boxes with laboratory-grade Amplitrex AT1000 test results.
- Type: 12AX7 / ECC83 Brand: NEC (Nippon Electric Co.)
- Condition: New in White Boxes Construction: Black Long Plate / Top Ring Getter
- Origin: Made in Japan Testing: Amplitrex AT1000
High Performance Screening: Tested against factory parameters for the 12AX7 / ECC83 family.
Amplitrex Characterized: Each tube is fully characterized for plate current (Ip), transconductance (Gm), Plate Resistance (RP), and Gain (Mu).
Amplitrex Characterized: Each tube is fully characterized for plate current (Ip), transconductance (Gm), Plate Resistance (RP), and Gain (Mu).
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Triode | Parameter Ip (mA) | Result Ip (mA) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 4472005 | T1 | 1.2 | 1.3 | 108% | 1600 | 1800 | 112% |
| T2 | 1.2 | 1.2 | 100% | 1600 | 1700 | 106% | |
| 4472007 | T1 | 1.2 | 1.2 | 100% | 1600 | 1800 | 112% |
| T2 | 1.2 | 1.1 | 92% | 1600 | 1700 | 106% |
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