Haven't tried upgraded cables, but I know that when I added Furman power/line conditioners to my system the difference was quite noticeable. I'd think anything that is better at getting juice to your components, or getting a cleaner, more stable supply, is going to affect sound somewhat.
It seems like the meta-argument around all this is "how much"---how big is the difference, and what's the upper limit of reasonable cost for improved performance? I wouldn't spend more than $50-100 as a test for my mid-range AVR, but if I upgrade to higher end Naim gear I might double that amount and see.
It seems like the meta-argument around all this is "how much"---how big is the difference, and what's the upper limit of reasonable cost for improved performance? I wouldn't spend more than $50-100 as a test for my mid-range AVR, but if I upgrade to higher end Naim gear I might double that amount and see.