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6L6-GB Tube

The 6L6  (P/N 154-0087-00) is a beam power pentode tube ("kink-less tetrode") for power amplifier applications. It has an octal base.

There are several variants including the direct successor, the 6L6GC. Similar European types include the KT-66 (~6L6GC, beam power) and EL37 (true pentode). (For differences, please see the links below.)


  • Anode power: 19 W (variants to 30 W) max.
  • Anode voltage: 275 V (variants up to 500 V) max.
  • Heater: 6.3 V, 900 mA, indirect

Data sheet