10-03-2016, 10:16 PM
Agree with Terry about the pin 1 issue. But other than that, you can use any 6L6 including the metal variants and the GB/GC variants.
The military variants of the 6L6, especially the JAN/VT metal ones tend to test better than the ones made for consumer sets.
The military variants of the 6L6, especially the JAN/VT metal ones tend to test better than the ones made for consumer sets.