Pentode
The Western Electric 409A / 6AS6 vacuum tube is a dual Control Pentode for switching gating or frequency
changing. It is a short suppressor base version of the 6AK5.
Electrical Data:
Heater Voltage .................... 6.3
Heater Current .................... 0.175 A
Preferred Substitutes ........................................................ 409A, 6AS6, 6Ж2П, 409