For sale: a perfectly matched pair of Mullard EL84 (6BQ5) output tubes, both etched with code "kM1 B".
Original NOS boxes included (see photos).
Both tubes tested at 97% on my AVO CT160 tube tester — tested for heater continuity, emission and general function with no signs of shorts or gas.
2x Mullard EL84 (6BQ5), etched code: kM1 B.
2x original Mullard/Philips boxes.
Multiple photo views showing tube labeling, pin area and boxes.
Condition & test results
Condition: NOS (new old stock) — glass and pins intact, visible markings and etchings.
Test results: both tubes read 97% on an AVO CT160; readings taken after heater verification and standard CT160 emission testing procedure. Results matched within 1%.
No visible internal damage or significant getter discoloration; close‑ups provided.
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 | a month ago |
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| Condition | Very Good (Used) Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more |
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