Up For Sale: 2 Pcs 
Shipping Charges: $35
For bulk or quantity requirements, feel free to Email us atPhilips Miniwatt ECC83 — Matched Pair
NOS NIB | VINTAGE BLACK PLATE | TOP RING GETTER
Black Plate
Top Ring Getter
Amplitrex Verified
Up for sale is a premium matched pair of vintage Philips Miniwatt ECC83 (12AX7) vacuum tubes. These units are New Old Stock (NOS) in their original factory boxes. Featuring the rare Black Plate construction and a Top Ring Getter, these tubes are highly sought after for their superior sonics and harmonic richness.
Both tubes have been fully screened and verified for balance on the Amplitrex AT1000. The data below is presented using the Percentage Method against original factory specifications (Ip = 1.2 mA / Gm = 1600 µMhos). These specimens exhibit outstanding strength and are ideal for high-end audio applications.
| SR. NO. | Test Triode – T1/T2 | Parametre lp mAdc | Result lp mAdc | % Ip | Parametre Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| #761003 | Triode 1 | 1.2 | 1.3 | 108.3% | 1600 | 1600 | 100.0% |
| Triode 2 | 1.2 | 1.0 | 83.3% | 1600 | 1700 | 106.2% | |
| #761007 | Triode 1 | 1.2 | 1.1 | 91.6% | 1600 | 1600 | 100.0% |
| Triode 2 | 1.2 | 1.2 | 100.0% | 1600 | 1700 | 106.2% |
⚠️ Note: Custom duties and taxes are the responsibility of the buyer in their country.
Note: 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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