The stock tube set is 6L6GC and 12AX7A, correct? Do I need to bias test replacement power tubes?
Hey JT and welcome to the community!
Is this for a PS-100 PS-2A? Any type or brand of 6L6 can be used in this amplifier without adjustment or modification. Just make sure they are a matched pair.
Just a clarification: the PS-100 requires a pair of 6550 power tubes and the PS-2A requires a pair of 6L6 power tubes. No biasing necessary as long as the IP rating of the replacement tubes are the same, or very similar to the original power tubes that shipped with the unit.