hotwaterwizard, thanks for your comments!!....These number parts come from a Vintange solid state Ela Siemens Auso V75-02 unit , I found anything about this rare unit, you can see in the attached picture. I draw the schematic by hand but if you have the original schematic will be fantastic!!!!....These units(I have two of them) look like somebody pull out its input transformers.Those Numbers make no sense Where did they come from?
What model number is the Preamp?
Maybe we can find a Schematic
I havent found them yet but Schematics are out there. A guy sols some on EBay with schematics.......Looks like military so the Transistors are Millitary Part numbers I would Guess