astelmaszek
You should go check out what cabling is used in multi million dollar recording studios by master mixing engineers. The market is more or less owned by canare at a dollar a foot carrying weak microphone signals over hundreds of feet of wire.That's not true. Many recording studios have chosen cables with great care, and examples of that have been posted here previously.
For all intents and purposes, audible audio signal might as well be DC as far as physics is concerned.Huh? That doesn't make sense - audio signals are very much AC. If you have DC in your audio cables, you have a major problem on your hands.