altho im own a nifty schoeps rig, im still a closet oktava fan. but unless u have a matched stereo pair, you might really benefeit from a mod. If you have a pair, open em up and compare the parts, like in this pic. the arrows point to a few of the parts that commonly need to be replaced, and as you can see, are often different. some older ones may also need the large blue caps replaced, cause they leak.
Anyway, ive done a few mods already and will do them for anyone needing it, for $100 plus parts and postage. there are a few mandatory caps, and resistors that will need to be swapped, as well as the FET. and there are some optional parts too that can be swapped. here is a before shot of the most recent pair i did for someone. ill send the after shot also.
PEACE