@thynamei
I will admit, it is hard for me to understand how there can still be a controversy after all these decades. I got my first high quality interconnect about 45 years ago. I had relatively cheap equipment and it just pass more of the poor signal through instead of limiting some of it… so no change. But the second cable I bought so completely changed the sound I was astounded… sounded like someone took the component out and brought in a new and better one. From that instance on, after every upgrade I would carefully choose and upgrade my cables and interconnects. Each time they have provided a very significant contribution to the overall sound quality. Btw, I pulled out that old first set of interconnects a few years ago… the ones that didn’t do anything… they made a profound impact on my contemporary system in a good way… my audio guy had steered me in the right way… only my equipment was not good enough to be improved by them.
Well, maybe I answered my own question. If you have a relatively poor signal to start with, passing through a cleaner version of the signal is probably not noticeable.
Also, some folks are under the incorrect impression that something like sound reproduction can be fully characterized by a few scientific measurements. I was trained as a scientist and worked as a scientist and engineer for over a decade and very quickly abandoned the idea that I could characterize the performance if audio equipment with a few simple variables and used listening and professional reviews as my evaluation criteria.