THE 16GK6 IS A POWER PENTODE AUDIO AMPLIFIER IN THE 9 PIN MINIATURE CON- ... OF THE TUBE HEATER IN SERIES WITH ... TUNG-SOL ELECTRIC INC., ELECTRON TUBE DIVISION ...
Tube 16GK6 or Röhre 16GK6 ID5512, Vacuum Pentode, Noval, 9 pin miniature (USA pico-9) B9A and shown. Radio tubes are valves.