Balanced cables

Cryoing wires does change the wire.
Same as cryoing drill bits and racecar engines. Those folks do it to have stronger parts. The metal IS changed near absolute zero. No bs.
I personally do not like the change in sound of some cryoed parts. but no question that there is an actual physical alteration in metal from cryoing.

As fate would have it many if not most high end cable manufacturers employ cryogenics for their cables and power cords. They wouldn’t be able to compete otherwise. The really smart ones like Audioquest control wire directionality for cables and power cords, even stranded cords. The connectors are smoother after cryo, kinda like the way the finger action of cryod trumpet keys is a lot easier and smoother.

Re: Cryo'd metal......pro musicians I know cryo'd their trumpets, trombones, sax's etc.  to find (what they tell me) is a more "pure" sound.

Pure sound good.

Recording studio's and recording engineer's could care less about 
hypo/cryo nonsense. I find it amazing that we all buy our vinyl and CD's 
from companies whose master tape CD's and master tape vinyl sound fabulous and guess what, just about all of these studio's are using budget wire from Belden, Canare and Mogami for recording and mixing. Audiophiles love to speculate that they are more "technically" proficient and superior to well educated recording engineers and the recording industry, since they got their education from high end magazines, but the reality is Audiophiles live in denial and most do not have the technical education on the level of the best recording engineers and studios. Give me a break.