RCA 7025A / 12AX7A – SINGLE TUBE (1 PC)
Top Ring Getter
Grey Plates
Made in USA
Low-Noise 7025A / 12AX7A / ECC83
New in White Box
Amplitrex AT1000 Tested
Up for sale is a single (1 pc) genuine vintage NOS RCA 7025A / 12AX7A dual triode vacuum tube, manufactured in the USA and supplied in an individual white box. The 7025A is the premium low-noise, non-microphonic industrial version of the standard 12AX7 / ECC83 dual triode. Designed with grey plate structures and a top ring getter, this tube is legendary for delivering exceptional clarity, a silent background noise floor, and rich vintage musicality. An ideal replacement or upgrade for sensitive audio preamplifiers, Hi-Fi gear, and guitar amp input stages.
This tube has been fully tested on a precision Amplitrex AT1000 tube tester. Measured Plate Current (Ip in mA) and Mutual Conductance (uMhos) alongside percentage performance ratings relative to nominal factory reference specs (Reference: 1.2 mA / 1,600 uMhos) are detailed in the table below.
| Serial No. | Triode Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | ||
| SR.NO.4822001 | Triode 1 (T1) | 1.2 mA | 1.3 mA | 108% | 1600 | 1600 | 100% |
| Triode 2 (T2) | 1.2 mA | 1.1 mA | 92% | 1600 | 1400 | 88% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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