You can't talk about expensive cables without mentioning Nordost Odin 2 - something like $30,000 per meter.

https://www.analogueseduction.net/analogue-interconnects/nor...

They will go very nicely with Sony's WM1Z Walkman® Signature Series https://www.sony.com/electronics/walkman/nw-wm1z

Both of those links lead to insults to my EE education.

Be sure to check out how much the Walkman costs.