Let's talk power cords

randy-11,
The change in sound quality is unquestionable. 

They absolutely make a difference.  As does cabling in general...as well as room acoustics / system synergy ETC.  Best thing for you to do is to try some...and make your own judgements.   

toddverrone759 posts11-16-2017 9:16am... Then I made great DIY cords and heard a bigger improvement. 

May I ask how you made it?

My brother had just bought a $2k Synergistic research power cord 
this summer and it was a nice increase in soundstage and bass.
i was given a heads up on a lesser name brand using a special 
double foil technology from a Verastarr Audio.  On my digital 
power supply and umbilical cord I could not believe it was the same digital in my Lumin Player .it was not just one thing but 
the performance as a whole was just much more real and dimensional .my brother brought his $2k cable over and it was good but flatter in character compared. I have had several $1500
cables this is now my go to cable . That was in a Copper 
they make 2 even better ,hard to believe .Stereotimes had a similar 
experience as myself. Verastarr interconnects are next .

Its not that its simply a matter of being a few feet between all the wiring in the wall and your equipment, saying the last few feet don’t matter. Its that the last few feet can mess up between the wiring in the wall and your equipment. Stock cables can degrade what is coming from the solid cable in the wall. That’s the point I believe some do not realize. Better cables do not "improve" the sound. They avoid messing up the sound... Then there are some cables that can color the sound in appreciated ways. Stock cords can simply be bland in comparison. The ideal connection? Would be having many outlets from the wall with the inside wiring extending out to the equipment without a power cord.   Shielding can matter.  Stock cords are generally not shielded.