Can a better power cable make a difference if NOT plugged directly into an outlet?

For sure your AC outlet is very lacking , buy the$99  Pangea Copper gold outlet 

that is on a totally different level ,these hospital grade outlets normally are brass 

which for one oxidizes after a few years and brass is 2-3x lesss conductive then copper and far more resistance ,the gold over copper keeps the conductor clean 

and these outlets are super heavy duty and grip. The connector great 

I also use Furutech IEC inputs on everything. And put WBT or Furutech on speaker terminals as well as outlets ,sonicly a very nice upgrade ,then the bottle neck with stock cheap buzz fuses ,vs say a Synergistic purple fuse Everything counts if youhave a refined audio system.

I watched a couple of cute cat videos.  They didn't change my mind that power cables can make no difference.

This is a pure example of a strange phenomenon:

1) Someone posts a question about cables, in the “cables” category of the forum. Looking for the opinions of people who have tried those experiments and experienced said cables

2) Like a clock, same exact people who always say cable make zero difference jump in, saying the same thing they said hundreds of times before. And with zero experience on said cables

Question is why? If a subject does not interest you, why chase the same exact subject over and over again? Is it so hard to ignore a subject that does NOT interest you?

@hilde45 In my trip of chasing and getting bettet sound I found that not all Power Conditioners serve that goal well. Just as not all cabels are created equaly so goes it with PCs ( Is that PC to say?).

The Audience PC may/may not make a difference to you where as another PC might? 
 
Can a 5k+ power cable make a difference? Your ears will know. 
 

My science teacher played Pink Floyd for me. He was cool. 
 

Results will vary based on your components and listening skills. With that said purchase one higher-end power cord and after a break-in period try it on different components and judge for yourself. In my systems upgraded power cords do make a very positive difference.