Thanks to OP for
observations. Wonder if he knew what he was wading into and how little his
reasonable credentials matter to the religious belief based sub-groups here...
Turns out op amp designs can be great, backed by listening
tests, and engineering and testing appraisal. Of course, they can
su__ …ahh be less than great: all about implementation and parts. I took a Denon PRA-1100 and put new caps and
higher speed more modern Op Amps in it and sounds really good. Total investment
<$75 and some sweat equity. (=fun)
It would be nice to be in a situation to have 2 clearly “better” and “worse” sounding pre-amps in the studio and put them on the bench for the more obvious measurements. Although pre- amps are dealing with smaller signals, at least they do not have the “power draw” issues to deal with.
It is fine by me when a poster indicates something like “I think this is bogus…because” knowing it is obviously one person’s opinion and that is what we are here for, but no need to directly rude to another even if widely divergent opinions.
I happen to believe that if sound differences repeatedly can't pass a double blind test they are likely non existent, and certainly not worth big money chasing, but you know, I could be wrong.