Funkwerk Erfurt ECC83 – Vintage Audio Tubes Matched Pair
NOS Matched Pair
Made in East Germany
Grey Plate
Foil Getter
Made in East Germany
Grey Plate
Foil Getter
Offering a matched pair (2 Pcs) of Funkwerk Erfurt ECC83 high-gain dual triodes, Serial Nos. 434021 and 434010. These desirable East German specimens feature Grey Plates and Foil Getters. Funkwerk Erfurt tubes are highly regarded by audiophiles for their clear, detailed top end and robust build quality. Both units are New in White Boxes and have been professionally characterized on the Amplitrex AT1000.
- Type: ECC83 / 12AX7 Brand: Funkwerk Erfurt
- Condition: NOS in White Box Construction: Grey Plate / Foil Getter
- Origin: East Germany Testing: Amplitrex AT1000
Laboratory Characterization: Tested against industry standard ECC83 parameters (Ip=1.2, Gm=1600). These specimens show balanced performance, with Serial 434010 reaching a perfect 100.0 Mu gain factor.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Triode | Parameter Ip (mA) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 434021 | T1 | 1.2 | 0.8 | 66.7% | 1600 | 1500 | 93.8% |
| T2 | 1.2 | 1.1 | 91.7% | 1600 | 1700 | 106.3% | |
| 434010 | T1 | 1.2 | 0.8 | 66.7% | 1600 | 1500 | 93.8% |
| T2 | 1.2 | 0.9 | 75.0% | 1600 | 1600 | 100.0% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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