RCA 13FD7 fehlendes Etikett Vakuumröhre, B&K 747B getestet - kombiniert Versand
10,39 €
Dissimilar Triode Sections Tested at 82/93. Vacuum Tube. sections of a single tube. Within 3% I consider to be 'Balanced'. Heat Radiator. Clean tubes will radiate heat better & operate cooler. 'Matched' refers to comparing the gm test results between the lowest to the highest of the identical sections of a set of tubes.
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