The sound room mics are prolly not gonna need all the mods/upgrades.
I got that the matched pairs and such from higher end dealers ie. sound room, will not need all of the parts suggested in the article, but you can still replace some of the electronics for drastic improvements.
the article said that somewhere in the production process, if the oktava techs didnt have the correct parts for the microphone on hand they would use whatever they had instead. It also said the mics that go to the sound room do not have these particluar problems ie:substituted parts, but even these do have inferior parts in them and would benefit from the mods
Good luck
bush:smoking2: