Beware, there is a lot of hype and snake oil in selling "high end" cables. The only things that matter are the specs and construction.
Speaker cable with "magic copper" is complete bull. Nobody can hear oxygen free copper...unless the placebo affect counts as hearing. This is so common in car audio. Stupid money is spent on super cables. As long as the specs are correct, the electrical signals, amps, and speakers don't care.
Signal cables with proper specs can be had at a fraction of the hyped boutique cable prices and electrically are the same or better. Quality construction is important of course.
Cables are important. Its just unfortunate that "audiophile" fake claims are used to sell overpriced cables....and some are not educated and fall in the trap. Blind tests have shown that we can't really hear these "differences" unless the comparable cable is out of spec junk.
Buyers beware! Buy quality not hype.