7788/E810F Amperex PQ Gold Pin Pentode Tube. Designed to operate as a wide band amplifier. New old stock. No longer available for export. MFR: Amperex. SKU: 7788-PQ.
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Amazon.com: E810F 7788 Mullard, Tubo de audio de pin dorado, Amplitrex probado : Industrial y Científico