RCA 12AX7 / ECC83 — NOS Single
MADE IN USA | GREY RIBBED PLATE | TOP RING GETTER
Grey Ribbed Plate
Top Ring Getter
Amplitrex Verified
Offering a premium New Old Stock (NOS) RCA 12AX7 / ECC83 dual triode. This authentic American-made valve features Grey Ribbed Plates and a Top Ring Getter. RCA 12AX7s are globally recognized for their excellent gain, low noise floor, and classic tonal characteristics, making them an ideal choice for high-fidelity restorations.
Precision tested on the Amplitrex AT1000 digital laboratory tester, the results below utilize the Percentage Method against original factory design-center specifications (Ip = 1.2 mA / Gm = 1600 µMhos). This tube shows strong emission and transconductance on both triode sections.
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #1639019 | Triode 1 | 1.2 | 1.6 | 133.3% | 1600 | 1900 | 118.7% |
| Triode 2 | 1.2 | 1.4 | 116.6% | 1600 | 1600 | 100.0% |
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
Custom duties and taxes are the responsibility of the buyer in their country.
Support: [email protected] Precision Verified — NOS Audio Tubes
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