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VACUUM CONVERTER SOCKET ADAPTER 8pin to 4pin 4pin to 8pin Tin plated for 5Z3 to 274B Vacuum tube HiFi Guitar audio amplifier 1PC
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7A8 Octode Converter Tube. Designed to perform the combined functions of the oscillator and mixer in superheterodyne receivers. MFR: Sylvania. SKU: 7A8. New old stock. No longer available for export.
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