Per the OP"
"Can someone help me understand what the specific function each type of tube performs in a power amp?"
This has yet to be answered...
Which pair of small signal tubes drive the KT120's?
I've seen 12ax7's commonly used as drivers, but I've also seen 6SN7's used as drivers in SET amps.
Though driver's can greatly affect the sound I suspect that the OP would be better off rolling the "other" input pair of signal tubes for starters.
Not much on the WWW about this particular model/amp that I came up with.
DeKay
"Can someone help me understand what the specific function each type of tube performs in a power amp?"
This has yet to be answered...
Which pair of small signal tubes drive the KT120's?
I've seen 12ax7's commonly used as drivers, but I've also seen 6SN7's used as drivers in SET amps.
Though driver's can greatly affect the sound I suspect that the OP would be better off rolling the "other" input pair of signal tubes for starters.
Not much on the WWW about this particular model/amp that I came up with.
DeKay