Telefunken EZ81 / 6CA4 — Matched Pair
NOS GERMANY | BLACK PLATE | TOP RING GETTER
Made in Germany
Black Plate
Top Ring Getter
Amplitrex Verified
Black Plate
Top Ring Getter
Amplitrex Verified
Available for purchase is a premium matched pair of Telefunken EZ81 rectifier tubes. These world-renowned German tubes feature the distinct Black Plate construction and Top Ring Getter, highly prized for their durability and rock-solid performance in high-fidelity power supplies.
Tested on the Amplitrex AT1000, the results below follow the Percentage Method relative to factory design-center specifications (Ip = 150.0 mA). Both units are New Old Stock (NOS) and matched for identical forward current.
| Serial No. | Plate | Parameter Ip | Result Ip | % Ip (Emission) | Leakage (REV) |
|---|---|---|---|---|---|
| #945002 | Plate A | 150.0 | 152.1 | 101.4% | 0.0 uA |
| Plate B | 150.0 | 152.3 | 101.5% | 0.0 uA | |
| #945005 | Plate A | 150.0 | 152.1 | 101.4% | 0.0 uA |
| Plate B | 150.0 | 152.3 | 101.5% | 0.0 uA |
⚠️ Note: Custom duties and taxes are the responsibility of the buyer in their country.
Precision Verified — NOS Audio Tubes
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