One (1) pc. G.E.C KT66 vacuum tube/valve
Marconi Osram Valve Co. - Genalex Hammersmith
Beam power tetrode
Construction: grey plate, smoked glass envelope, brown base
Test at NOS levels
Thoroughly tested on calibrated Hickok 533A tube tester with excellent results - (more than 100%).
7,000 µMhos where 6,300 µMhos = 100% Gm. Also tested on Tesla BM215A with 135 mA
Tube is in excellent overall condition.
Excellent condition with very high values!
Made in United Kingdom
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 3 years ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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Product safety information may be available here.




