Medium-Mu Triode - Twin High-Mu Triode
The 6K11 / 6Q11 Vacuum tube is a duodecar type used in general purpose applications.
It requires a duodecar 12-contact socket.
The 6K11 / 6Q11 tube is used in various classic Ampeg amplifiers such as Ampeg V2 and V4 models.
Preferred Substitutes ................ 6Q11
Substitutes ......................... 6AV11