@bdp24 In my case I wasn't try to modify but trying to save a good sounding preamp which has run its lifetime on the caps. My tech (Bill Watkins jr) just uses these caps because they are good...at least that's my understanding.
Still, I understand your concern. I suspect design concept is probably a balancing act as much as anything. Symmetry comes to mind...just like putting together a good sounding system. Mfgs do it in the micro. We do it in the macro. I have my systems synergy worked out after years of effort. I thought I was going to have to replace the PFR because it is old (Still may have to do so). So its nice to keep that symmetry...even though that tube preamp looks awful tempting......
Still, I understand your concern. I suspect design concept is probably a balancing act as much as anything. Symmetry comes to mind...just like putting together a good sounding system. Mfgs do it in the micro. We do it in the macro. I have my systems synergy worked out after years of effort. I thought I was going to have to replace the PFR because it is old (Still may have to do so). So its nice to keep that symmetry...even though that tube preamp looks awful tempting......