Philips ECC82 / 12AU7
GREY RIBBED PLATE | RING GETTER | MADE IN HOLLAND | NOS SINGLE
Heerlen Plant (Δ)
Grey Ribbed Plate
Amplitrex AT1000
Up for sale is a premium vintage Philips ECC82 / 12AU7, manufactured in Holland. This NOS unit features the classic Heerlen production hallmarks: a Grey Ribbed Plate and Ring Getter. Philips Dutch-made tubes are legendary in the audio world for their liquid musicality, offering a smooth, natural tonal balance that defines the vintage European sound.
Precision tested on our Amplitrex AT1000 digital laboratory tester, the results below utilize the Percentage Method against original factory design-center specifications (Ip = 10.5 mA / Gm = 2200 µMhos). This tube displays healthy emission and stable vintage parameters.
| Serial No. | Date Code | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|---|
| #1109003 | Δ5A3 | Triode 1 | 10.5 | 8.2 | 78.1% | 2200 | 1900 | 86.4% |
| Triode 2 | 10.5 | 9.2 | 87.6% | 2200 | 2000 | 90.9% |
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
Support: [email protected] Precision Verified — NOS Audio Tubes
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