I guess it is clear that there is no need for another EE like me to comment on this, however I am about to. The thread has drifted to where it is hard to tell what the latest consensus is but if it matters at all, I think we tend to over-analyze burn-in a lot. I have done lots of research in system reliability (for aircraft systems mostly - they get picky about this sort of thing) and capacitors are by far the biggest problem and change the most. However, I hate to say it but the design uses a given value and not every component is matched when installed in your amp (and it drifts anyway), thereby making burn-in moot for amps and preamps. However, speakers are a different story...but that is for another thread.
As a final note, we don't actually understand everything in the universe, do we?? Some of you sound like you do. Each year I spend in EE courses (I am now at year 8), I realize how little we actually understand well - and that is the part that shouldn't be forgotten. Everything changes, nothing stays put. Arthur
As a final note, we don't actually understand everything in the universe, do we?? Some of you sound like you do. Each year I spend in EE courses (I am now at year 8), I realize how little we actually understand well - and that is the part that shouldn't be forgotten. Everything changes, nothing stays put. Arthur