*WHITE PAPER* The Sound of Music - How & Why the Speaker Cable Matters

Mr.  audio2design

On your MIT cable you have a box. All MIT cables does. Inside that box, you will find an LRC filter. That may the one that rolls off your missing highs. Those cables (with some box along the cable) have that property. 
What else do you think that box (molded) may hide in it? A COVID-19 vaccine?
It does effect sound, but in the wrong way.
Why paying and getting such a roll off, when you paid an arm and a leg for a perfectly linear sound system?
That box, even if it could be removed (it cannot!), nothing guarantees that the cable is up to your Amps requirements to drive (DF). When studied a cable of MIT, taking it apart, I found an RF cable (RJ-45 alike) with the shield and solid core, connected at the adjes. 

😂 

It always comes down to anecdotal evidence, lack of any real meaningful experience and the stories people tell themselves in order to justify their world view.  My journey has been about actually buying and living with a vast array of equipment and cables over the decades, listening with an inquisitive and open mind.  I didn’t need to justify my purchases due to lack of funds or desire to explore.  At the end of the day however, whatever gets you through the night!  Enjoy

Mr. Dave_b

None of the stuff that is teached at technical institutes are based on  meaningful experience. With such attitude, we would still be thinking like Newton, missing Einstein's theory of relativity and more. 
meaningful experience can get you to be a good home cook. If you want to step up, you need to go to a culinary school (as I did). You may see what is the difference between meaningful experience and knowladge.

However, you are keeping naging me for nothing. Unless you try my way and come with critics, or bring some of yours to the table, we are going nowhere. If all you got is meaningful experience, than you practically have nothing.