Thanks for the info, I have the manual, and the only frequency response gain reduction control referenced for adjustment is the R37 screw on the back of the LA-2A, which I may try messing with a little. I checked your .PDF (thank you) and could find no instructions for adjusting any of the other three controls you referenced.
Seems to me that some enterprizing tech could start his own little cottage industry tuning these things for specific applications. Kinda like Klaus Heyne mods those U87's. Never mind, that's probably a very bad idea for a lot of reasons, ha ha.
I think the best plan of action for me at this point is to buy and install the Mullards, then if necessary, experiment with the lower peak reduction and gain settings as mentioned in the thread that Mike referenced, and then finally (again, only if necessary) very carefully adjust R37 to apply a tiny bit more compression to those higher frequencies. I think that ought to do it.
