difference between 6922 and the 6h30 super tube


does anyone know the dirrence between the 6h30 aka supertube and a 6922/7308 ?

are the pins the same ?
what is the difference ?

thank you for your help.

Mike
mikesinger

Showing 1 response by rlips

Pins are the same, but I understand the heater currents are different. Apparently, you can not substitute one for the other.