Operating Points of Fi 2A3 / 3 Tube 3 Watt Direct Coupled Amplifier (Lipman) | diyAudio
RCA 6SF5 Vacuum Tube Valve NOS NIB - Etsy
True NOS NIB Tung-Sol USA 6SF5 Metal Vacuum Tube 100+% - VIVA TUBES
6SF5 High Mu Triode Tube. Designed for service as a high gain audio-frequency amplifier and is especially useful in resistance-coupled amplifier circuits in AC or DC operated equipment. MFR: GE, Tung-Sol, Westinghouse,
Substituting 12AX7 for 6SF5
SM5CBW - Tubedata
Operating Points of Fi 2A3 / 3 Tube 3 Watt Direct Coupled Amplifier (Lipman) | diyAudio
6SF5 driver for 300B/GM70/813 SE Amps – Bartola® Valves