6S4A Medium Mu Triode Tube. Designed to be used as the vertical deflections amplifier in TV receivers. MFR: GE, RCA, Sylvania. SKU: 6S4A. New old stock. No longer available for export.
Audio kit: Tube 6S4A + 6N1P 5WATT HI - FI Power Amplifier
VinylSavor: Tube of the Month : The 6S4A
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