Not having any exposure to SOTA ic/speaker/power cables renders my comments on such as basically a bronx cheer, but to spend 5.5K$ would make self desire to be purchasing 2m + connects from a company that makes them for NASA or research facilities like CERN....
They have to prove they hit their specs every single zeptosecond accurately in a lab....
...and Space Rating stuff is Harder yet.
Spend what you feel you must.🤷♂️
Personally, waiting for the quantum computer cluster of the week to answer "42" and shut themselves off permanently.... Or, "Everything You Know Is Wrong."., followed by HAL's death scenes, including "Daisy" before heading to the right side of the decimal for pi.
(...btw, The Biggest Fundamental Questions That ‘42’ Really IS The Answer To
...and that's just 'the fundamentals'....
"That's Not All, Folks!" *Merrie Melodies theme fanfare w/W.Woodpecker*
...not at all...
Keep banging those rocks together. ;)