Speaking of Pink Floyd, their engineers hear a difference in cable direction, right down to the earth cables. The article linked tells of the Astoria, bought by David Gilmore, and how it was transformed into their recording studio. It goes into all manner of it's origin, uses, recording gear and the engineers and musicians who work on it. A great read to past the time.
The part about cable directionality is just past the halfway mark on the scroll indicator.
All the best,
Nonoise