We've been through all this dozens of times in the last year.
Clearthinker has his head screwed on properly.
I'm not with the dreamers who think they can hear differences in passive well designed mains cable and even fuses but they will never agree with me nor submit to blind tests so it can be proved they are not simply experiencing confirmation bias. Until they do, this will run and run, wasting everyone's time. They should shut up.
But system interconnects can make small differences and active conditioners can certainly clean away unwanted noise on the line if your power supply suffers from that.