Power cord

     No one can tell you whether/how your system, room and/or ears will respond to some new addition.   There are simply too many variables.

     LIKEWISE: no one can possibly know whether a new addition (ie: some kind of disc, crystal, fuse, interconnect, speaker cable, etc)  will make a difference, in their system and room, with their media and to their ears, without trying them for themselves.   

     Some companies offer a 30 Day Satisfaction Guarantee, so- those that are actually interested, have absolutely nothing to lose by trying (experimenting with) such.     

     Anyone that knows anything about the sciences, realizes that something like 96% of what makes up this universe, remains a mystery.       

     For centuries; humanity’s seen, heard, felt and otherwise witnessed phenomena that none of the best minds could fathom, UNTIL they developed a science or measurement that could explain it.     

     The Naysayer Church wants you to trust their antiquated science (1800’s electrical theory) and faith-based, religious doctrine, BLINDLY (their credo: "Trust ME!"). 

     Theories have never proven or disproven anything.  It’s INVARIABLY testing and experimentation that proves or disproves theories/hypotheses.   

     IF you’re interested in the possibility of improving your system’s presentation, have a shred of confidence in your capacity for perceiving reality and trust your own senses: actually TRY whatever whets your aural appetite, or- piques the curiosity, FOR YOURSELF.         

                      The Naysayer Church HATES it, when THAT happens!  

As previously mentioned, go with lending library at CableCompany. Only a survey of cables auditioned in your system will inform you. I went through a ten year period auditioning  interconnects, speaker, digital and power cables, many price tiers.

When you first change out a single cable on your system you may hear some immediate differences, or, you may think you're hearing differences. It depends upon you and your susceptibility to placebo effect and confirmation bias. This is why you need to live that change for a while. At the very least a few weeks. Then after that time's elapsed, remove the cable and replace it with the original. If there was any real improvement you should notice its absence right away. If you do, then keep it. What you will never discover is whether or not a pricier cable sounds better than a well crafted one that costs less-- because, beyond a certain level of build and materials quality, more money does NOT equal better sound quality -- despite the very questionable claims made by many of the companies that sell cables at stupid money prices -- what you'll hear in reality, at best, are differences. You have to decide whether or not those differences add up to better sound or not. BTW, if your room acoustics are daff, you'll get far better value and better sound by dealing with those problems first. I'm starting to believe that many tweaks appeal to people because they are simple plug and play, whereas fixing room acoustic issues is more work. 

@wesheadley I agree with you.

Not sure the OP cares though. As others alluded to another cable post to rattle the cages. Works every time, sadly.

@wesheadley 👍 applies to components as well. Bad mistake to jump to conclusions too quickly…been there dine that!

I’ve tried a number of power cables and interconnects and I’m using Nordost now. It is all subjective and system dependent. There’s no perfect set of cables that would work for everyone in every system.