SIEMENS ECC83 / 12AX7 — Matched Quad 4 Pcs
Laboratory Verified
Made in Germany
Top Ring Getter
New in White Box
Amplitrex AT1000 Tested
Available is a rare, precision-matched quad of Siemens ECC83 12AX7 twin triodes. These genuine German-made valves feature the classic Grey Plate and Top Ring Getter construction. Siemens ECC83s are legendary in the audiophile world for their exceptional transparency, high-end detail, and low noise floor, making them the ultimate upgrade for Hi-Fi preamps and guitar amplifiers.
Each tube has been meticulously screened on the Amplitrex AT1000 Advance Digital Tube Tester. Performance is calculated using the percentage method against factory design standards (Ip = 1.2 mA / Gm = 1600 µMhos).
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 1205029 | T1 | 1.2 | 1.4 | 117% | 1600 | 2100 | 131% |
| T2 | 1.2 | 1.4 | 117% | 1600 | 2000 | 125% | |
| 1205022 | T1 | 1.2 | 1.8 | 150% | 1600 | 2100 | 131% |
| T2 | 1.2 | 1.8 | 150% | 1600 | 2200 | 138% | |
| 1205027 | T1 | 1.2 | 1.6 | 133% | 1600 | 2170 | 136% |
| T2 | 1.2 | 1.2 | 100% | 1600 | 1900 | 119% | |
| 1205026 | T1 | 1.2 | 1.6 | 133% | 1600 | 2100 | 131% |
| T2 | 1.2 | 1.4 | 117% | 1600 | 2000 | 125% |
About NOS Audio Tubes
We specialized in thoroughly tested and screened quality vacuum tubes. Based in Mumbai, India, we have been in the valve and tube business since the 1970s. Our inventory of approximately 300,000 tubes is verified using professional-grade equipment including the Amplitrex AT1000, Hickok 752a, and AVO Type 160.
Notice: Custom duties and taxes are the responsibility of the buyer in their country.
Reviews
There are no reviews yet