ERA ECC83/12AX7 – SINGLE TUBE
GRADE: PLATINUM SERIES | VINTAGE GERMAN HIGH-MU DUAL TRIODE
ECC83 / 12AX7 High-Mu Dual Triode
Black Plates
Top Ring Getter
New in White Box
Amplitrex AT1000 Tested
Up for sale is a single piece (1 PC) of vintage ERA ECC83 (12AX7) dual triode vacuum tube, packed in a white box. Made in Germany, this tube features smooth black plates, a top ring getter, and crisp ERA branding printed on the glass. Known for its superb German construction, clear and transparent high frequencies, rich harmonic detail, and reliable low-noise operation in audio preamplifiers and guitar amplifiers.
As shown, the tube has been thoroughly tested on an advanced Amplitrex AT1000 tube testing system in full fixed-bias mode. Plate current (Ip) and mutual conductance (Gm) measurements alongside percentage performance ratings relative to nominal factory specs are detailed in the table below.
| Serial No. | Triode Section | Plate Current (Ip) | Transconductance (Gm) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % Gm | ||
| SR.NO. 4667001 | Triode 1 (T1) | 1.2 mA | 1.8 mA | 150% | 1600 µMhos | 2300 µMhos | 144% |
| Triode 2 (T2) | 1.2 mA | 2.0 mA | 167% | 1600 µMhos | 2300 µMhos | 144% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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