TELEFUNKEN ECC83 / 12AX7 — Premium Pair 2 Pcs
Laboratory Verified
Made in Germany
Top Ring Getter
New in White Box
Amplitrex AT1000 Tested
Up for sale is a premium pair 2 Pcs of Telefunken (TFK) ECC83 12AX7 twin triodes, legendary for their precision and sonic neutrality. These genuine German-manufactured valves feature the signature Grey Plate and Top Ring Getter construction. Telefunken ECC83s are world-renowned for providing an exceptionally low noise floor and unmatched detail, making them the gold standard for high-end Hi-Fi audio restoration and critical recording applications.
Both units have been thoroughly characterized on the Amplitrex AT1000 Advance Digital Tube Tester. Performance metrics are 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 |
|---|---|---|---|---|---|---|---|
| 1671005 | T1 | 1.2 | 0.8 | 67% | 1600 | 1400 | 88% |
| T2 | 1.2 | 0.7 | 58% | 1600 | 1300 | 81% | |
| 1671011 | T1 | 1.2 | 1.2 | 100% | 1600 | 1500 | 94% |
| T2 | 1.2 | 0.9 | 75% | 1600 | 1300 | 81% |
About NOS Audio Tubes
We specialize in thoroughly screened and laboratory-tested quality vacuum tubes. Based in Mumbai, India, we have been in the valve and tube business since the 1970s. Our massive inventory of approximately 300,000 valves is verified using industry-leading 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.
![Lot 100pcs.NOS NIB 7193 [2C22] RCA Made In U.S.A. Black Rods Support](https://i0.wp.com/www.nosaudiotubes.com/wp-content/uploads/2023/01/7193-03.jpg?resize=250%2C188&ssl=1)
Reviews
There are no reviews yet