Western Electric 300B · Kansas City, 1988
Original Kansas City-plant 300B in its factory carton — not the reissue, not the clone.
- SKU
- MS-VT-0419
- Era
- 1950-2000
- Condition
- NOS, sealed WE carton, factory tag intact; test-fired only
- Dimensions
- 155 × 62 mm (H × Ø)
- Weight
- 94 g
- Provenance
- Purchased 2018 from a shuttered high-end audio shop in Denver, still sealed in the original shipping carton.
- Category
- Vacuum Tubes & Valves
- Tags
- western-electric300bnosdirectly-heated-triodeaudio
A genuine pre-reissue Western Electric 300B from the Kansas City plant, dated to the second production run of 1988. The envelope carries the correct etched logo above the pin one indicator; the base is the tall bakelite type with the copper-plated pins that turn a warm brown with age.
The carton is unopened save for our verification pull. The internal tag lists the production date and the operator's stamp. Filament resistance is dead-on 4.9 ohms cold, plate is straight, and the getter flash is a mirror across the top dome.
Single tube. If you are building a stereo pair, we will note your name and hold the next matching bottle when it surfaces.
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