Is it all in my head??

@nonoise,

"Your hearing is completely different from someone else.
You’ll have some overlap but your hearing is unique.
Your amp won’t have the same output specs as others.
Your speaker won’t have the same input specs as others."

Not sure I get that part... That's what the skeptics say to us about fuses, wiring and everything else controversial...that we lack either the educated ear or the technical skill to interpret the results of our own observations, and that therefore we shouldn't even attempt to find out on our own what might be going on. But, for the life of me, I don't get why we wouldn't do so, if we have an opportunity in front of us. Why would audiophiles trust their ears with speakers, with amps and sources...but Not with wiring? Makes no sense to me... I for one am not looking solve the 'mystery of all wiring', just to see if I can unearth the kind of things the makers are not telling me. Your post above makes it look like all investigation on the topic should be banned or dropped. Oh sure, some folks might be in need of starting over from the beginning when it comes to dreaming up an experiment that is dirt simple enough to be factually useful, yeah, I'll grant you that might be a fair criticism, but I mean should we deny other peoples right to experiment...or just maybe be willing to call into question the results on occasion. Just sayin', is all.

Regards

Far more likely that you are hearing a difference than it all being a figment of your imagination. 

waltertexas

If you like the Kimber cable sound and improvement then 
maybe you should stay with using Kimber cables and move up to a higher grade that they make .
Synergy can be an elusive find , so changing cable manufactures could prove positive or negative sonic effects .

nonoise makes a good point , you've started now go from there .

@nonoise,

Maybe I didn't see that you were addressing the OP and not the thread??

It's partially my bad. 🤔
The thread started with power cords and kind of went off on ICs and SCs and I just ran with the last few posts concentrating on speaker cables. 

Some of what I listed can still apply with PCs since not all power supplies are made the same and not all power sources are either when it comes to noise, wiring, substations, geography (as was pointed out on another thread where in the North East, the power somehow corrodes outlets at a level not experienced elsewhere-I'm sure weather has some factor in it as well).

Where I live the power is really quite good and regular, not varying +/-2V all day long and yet every PC I have sounds different. The three best I have are the TWL American Digital, with the Cullen Red Copper and Zu Mission coming in second, with little difference between the two. 

They're all made well with quality parts yet they're all made differently, and they all sound different. I can't explain it.

All the best,
Nonoise