Any truth behind "multipole" technology in audio signal transmission?
First, let me give you a little background on myself, so you can "know the source"...  I'm a Sr. Electrical Engineer working in the Professional Audio field. I design high end pro-audio equipment.  You've heard my stuff, as it's been used all over.  I have also designed stuff for a small "audiophile" company.  I'd also call myself a Skeptic, and a practical person.  My pet peeve is worthless pieces of expensive audiophile junk.  That being said:

There are two ways to approach this:  Does it work? and Is it worth it?

Does it work:  Yes!  Um, no.  Well, maybe.  It depends on what you define as "work".  If you define "work" as "can it, in theory, make a positive difference when compared to normal speaker cable" then it does work.  But if you define work as "makes a positive difference that an expensive piece of gear can measure, or that can be determined by multiple listeners in a double-blind test" then the answer is no.  

Is it worth it:  These things cost US $8500 and make such a small improvement that no one can really hear it (or can prove that they hear it).  A good pair of practical speaker cables will cost about $30.  For the $8470 price difference, what could you buy that would make more of a difference in your life/happiness?  A vacation to a remote tropical island?  A semester in a University?  The ultimate man-cave?  With these speaker cables all you get is bragging rights that you can blow lots of money.  Get spinners for your car, they'll attract more attention that speaker cables.  So, um, no.  They aren't worth it.

Here's an interesting article about comparing expensive Monster speaker cables to a wire coat hanger.  Spoiler:  The coat hangers work quite well.

The ideal speaker cable is short-ish, reasonably large (but not absurdly large) gauge, and set up as a twisted pair.  Nothing else really matters.