Siemens ECC83 / 12AX7 — Matched Pair
NOS GERMANY | GREY PLATE | LABORATORY VERIFIED
Made in Germany
Grey Plate Construction
Top Ring Getter
Amplitrex Verified
Grey Plate Construction
Top Ring Getter
Amplitrex Verified
Presented here is a matched pair of vintage Siemens ECC83 dual triodes. These German-made Grey Plate valves with Top Ring Getters are renowned for their high-gain stability and superior audio fidelity.
Each valve has been digitally analyzed on the Amplitrex AT1000. Results are calculated using the Percentage Method based on original factory specifications (Ip = 1.2mA / Gm = 1600 µMhos).
| Serial No. | Side | Parameter Ip | Result Ip | % Ip | Parameter Gm | Result Gm | % Gm |
|---|---|---|---|---|---|---|---|
| 1205006 | T1 | 1.2 | 1.0 | 83.3% | 1600 | 1600 | 100.0% |
| T2 | 1.2 | 0.8 | 66.7% | 1600 | 1500 | 93.8% | |
| 1205010 | T1 | 1.2 | 0.9 | 75.0% | 1600 | 1600 | 100.0% |
| T2 | 1.2 | 0.9 | 75.0% | 1600 | 1600 | 100.0% |
Note: Custom duties and taxes are the responsibility of the buyer in their country.
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