6S33S-V 6C33C-B

6S33S-V / 6C33C-B Russian directly heated triode, perfectly matched pair from 90s, all tubes have the same factory code!!!
6S33S-V 6C33C-B

6S33S-V / 6C33C-B Russian directly heated triode, perfectly matched pair from 90s, all tubes have the same factory code!!!