NEC ECC83 — Matched Quad
MADE IN JAPAN | BLACK PLATE | SQUARE GETTER
Made in Japan
Vintage Black Plate
Matched Quad (4 Pcs)
Amplitrex Verified
Vintage Black Plate
Matched Quad (4 Pcs)
Amplitrex Verified
Available for sale is a world-class matched quad of vintage NEC ECC83 (12AX7) tubes. Manufactured in Japan, these feature the highly sought-after Black Plate construction and Square Getters. NEC tubes from this era are renowned for their exceptional transparency and rugged build quality.
These tubes have been precision tested on the Amplitrex AT1000. The results below are calculated via the Percentage Method against original factory design-center specifications (Ip = 1.2 mA / Gm = 1600 µMhos). All units are supplied in their original vintage boxes.
| Serial No. | Section | Parameter Ip | Result Ip | % Ip | Parameter Gm | Result Gm | % Gm |
|---|---|---|---|---|---|---|---|
| #4007012 | Triode 1 | 1.2 | 0.8 | 66.6% | 1600 | 1500 | 93.7% |
| Triode 2 | 1.2 | 0.8 | 66.6% | 1600 | 1500 | 93.7% | |
| #4007003 | Triode 1 | 1.2 | 1.0 | 83.3% | 1600 | 1500 | 93.7% |
| Triode 2 | 1.2 | 1.0 | 83.3% | 1600 | 1600 | 100.0% | |
| #4007013 | Triode 1 | 1.2 | 0.9 | 75.0% | 1600 | 1500 | 93.7% |
| Triode 2 | 1.2 | 0.9 | 75.0% | 1600 | 1500 | 93.7% | |
| #4007018 | Triode 1 | 1.2 | 0.8 | 66.6% | 1600 | 1500 | 93.7% |
| Triode 2 | 1.2 | 0.9 | 75.0% | 1600 | 1500 | 93.7% |
⚠️ Note: Custom duties and taxes are the responsibility of the buyer in their country.
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