Hate to be the one to tell you this but the difference you heard with power cords? Extends right on to power strips, conditioners, outlets- right on down the line just as far as you want to go. That's the bad news- there is no end to it. But it's also the good news- it just keeps getting better and better.
This actually makes things easier not harder. All you need is a budget and a need. You need outlets? Look at outlets, strips, whatever are within your budget. What you care about and want is sound quality, so buy based on listener impressions of sound quality- and nothing else! Do not get caught up in stories, which is all anything technical amounts to, stories. The only story that matters is the one about how it sounds. It really is that simple.
This actually makes things easier not harder. All you need is a budget and a need. You need outlets? Look at outlets, strips, whatever are within your budget. What you care about and want is sound quality, so buy based on listener impressions of sound quality- and nothing else! Do not get caught up in stories, which is all anything technical amounts to, stories. The only story that matters is the one about how it sounds. It really is that simple.