12AU7/ECC82

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   PIN CONNECTIONS

   PIN NO. 1 = PLATE NO. 1
   PIN NO. 2 = GRID  NO. 1
   PIN NO. 3 = CATHODE NO. 1
   PIN NO. 4 = HEATER
   PIN NO. 5 = HEATER
   PIN NO. 6 = PLATE NO. 2
   PIN NO. 7 = GRID  N0. 2
   PIN NO. 8 = CATHODE NO. 2
   PIN NO. 9 = HEATER CENTER TAP