Yep, heard many systems tweaked to an inch of their lives. Friends with £5k’s “worth” of power cables. Several expensive Ethernet cables, jitter and data cleaners by Melco. More power supplies than a commercial business on a rack that costs nearly as much as my system. And it doesn’t come close to what can be done with some well engineered speakers set up with multiple distributed subs based on tooles research and self built for a few hundred quid.
Yet many of these people I know claim huge upgrades every time they change a cable, have some good upgrade peddled to them by dealers or the other subjective reviews of listeners from forums, seems like just wanting to back up each other’s view that the more you spend the better the sound gets, and couldn’t go back to not having the latest audio quest Ethernet cable or bi wire links. Totally in their heads, get to hear plenty of systems regularly and I just can’t seem to hear what they do