WHY CABLES MATTER!

 I’m just getting into this.  So what you are saying is that I just go buy stuff and see if it works?

                                         Not necessarily.

      Many cable vendors have fairly knowledgeable people manning their phone lines & e-mails*, available to guide you, based on your equipment, finances and listening habits/desires.

      Other than that: research what's out there and read opinions/reviews on what piques your interest.

       Take advantage of those that offer 30 day return policies, if you must.

       Use some common sense and you won't waste any money.   

                       *ie: https://www.usedcable.com/free-consult  

and: https://www.synergisticresearch.com/cables/foundation/foundation-ic/#:~:text=We%20are%20so%20confident%20these,house%20sound%20is%20all%20about.

@rodman99999 First you say 

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.

Then….

Many cable vendors have fairly knowledgeable people manning their phone lines & e-mails*, available to guide you, based on your equipment, finances and listening habits/desires.

Why would it matter what those knowledgeable people say?  I’m not trying to be obtuse here, but that makes no sense.  I feel like you are trying to sell me on these websites.  
 

So back to my original questions, but more specific:

1.  Can you name one attribute you look for in speakers that tells you they will be “high enough resolving” when researching a purchase?

2.  Can you name one attribute you look for in amplifiers that tells you that they will be “high enough resolving” when researching a purchase?

I have no idea, at this point, whether cables make a difference because I’m currently looking at system options to purchase.  But it appears that I won’t have any luck with cables unless my system is “high enough resolving”.  That is what I’m shooting for.  There has to be a way to look at these things prior to purchasing that will give me an idea of how they perform, correct?  Some of these speakers and amps weigh hundreds of pounds, and even with free return shipping will be a giant pain to return.  

I am beginning to think that high-end audio might not be for you.

"Why would it matter what those knowledgeable people say?"  

       Because they have years of experience with a myriad of listening tastes/desires, cables and components.

       The goal would be to narrow down the variables, based on that familiarity.

"I’m not trying to be obtuse here... "

       I suppose: some are just innately better at it than others.

These oft-repeating cable threads have one entirely predictable outcome of a Mexican standoff between two irascible polar opposite cohorts of naysayers versus advocates. Each side has absolutely NIL-chance of every convincing the other party to change their beliefs.