Similar twin triode but different mu (32 vs 35), higher heater current (0.95A vs 0.8A), and Octal base
Electrical Specifications
Absolute Maximum
Anode Voltage (max)Max. Plate Voltage300V
Anode Dissipation (max)Max. Plate Dissipation (per plate, Class A1)1W
Cathode Current (max)Max. Peak Plate Current (per plate)125mA
Typical Operating
Anode Voltage (typical)Plate Voltage (Class A1, parallel)250V
Notes
Common cathode — both triode sections share a single cathode pin. Individual cathode biasing per section is not possible.
Class A1 max plate dissipation is only 1.0 W per plate; Class B max plate dissipation is 5.5 W per plate. The tube is primarily intended for Class B push-pull service.
In Class B push-pull with both sections, 10W output at 4% THD into an 8000Ω plate-to-plate load at 300V plate voltage.
The 6N7/6N7G/6N7GT is the Octal-base replacement for the 6A6, with identical electrical characteristics but different base and heater current (0.8A for both).
Uses the medium 7-pin (UY) base, also called the 7B base. Not to be confused with the small 7-pin or Loctal bases.
Base pin diagram: 7B (medium 7-pin). Pin arrangement viewed from bottom.