Colomor ECC83 — Premium Single
PLATINUM SERIES | GREY PLATE | TOP RING GETTER
Grey Plate
Top Ring Getter
Amplitrex Verified
Available for purchase is a premium vintage Colomor ECC83/12AX7 preamp tube, manufactured in England. This unit is built with traditional Grey Plates and a Top Ring Getter, representing the reliable high-standard production of the British golden era of valves.
Tested on the Amplitrex AT1000 digital laboratory tester, the results below are provided using the Percentage Method against original factory design-center specifications (Ip = 1.2 mA / Gm = 1600 µMhos). This tube displays very high transconductance values, making it an excellent candidate for demanding audio applications.
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #4662001 | Triode 1 | 1.2 | 0.7 | 58.3% | 1600 | 2100 | 131.2% |
| Triode 2 | 1.2 | 1.7 | 141.6% | 1600 | 2200 | 137.5% |
⚠️ Note: Custom duties and taxes are the responsibility of the buyer in their country.
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