True NOS NIB Tung-Sol USA 6SF5 Metal Vacuum Tube 100+% - VIVA TUBES
VinylSavor: The Octal Phono Preamplifier, Part 1 : Circuit
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,
Operating Points of Fi 2A3 / 3 Tube 3 Watt Direct Coupled Amplifier (Lipman) | diyAudio
G.E 6sf5 nos .tested new | Reverb
6SF5 Sylvania NOS 1960's (1.1ma Gm=1500)
6SF5 by RCA - Buy or Repair at Radwell - Radwell.com