Neutral electronics are a farce...

Geoff I think you are a control freak and exhibit symptoms of narcissism.  Some megalomania perhaps to.    It seems to affect your reading comprehension and ability to comprehend or accept anything anyone else says.  Its all about you it seems.    It might still be treatable. 

Try some humility or at least maybe thanking people when they correct you or try to help.  Does not have to be me.

And don't give up on the thought of maybe developing a conscience.  Yes you might find it interesting.

Just my constructive feedback based on observation.    Not a personal attack.    

Thanks for the psychoanalysis, Mopman.  I suggest you high tail it over to your nearest library and hawk up on magnetic fields and electromagnetic waves before posting on this thread again. 

Have a nice day 

Rodman, good comeback.  Cough, cough.

The shielding in cables protects the cables from external radio frequencies but does nothing to protect the audio signal from the induced magnetic field. And the reason is because the induced magnetic field is a different issue and requires a different solution. It's name is high permeability.  

Again your first sentence is correct but what follows is not. One reason balanced lines work is because the system is relatively impervious to induced magnetic fields. This is because the magnetic field is impinged on the shield of the cable and the two conductors within. Since the shield carries no signal current whatsoever there are no worries there- it can't induce noise in the ground plane since ground is ignored. The internal connections carry the signal in two phases, 180 degrees opposed. When it arrives at the input (amplifier) the Common Mode Rejection Ratio (CMRR, https://en.wikipedia.org/wiki/Common-mode_rejection_ratio) of the amplifier then comes into play. If properly designed, the result will be that EMI imposed by the magnetic field cannot get amplified. This is because the input of the amplifier is looking for what is **different** between the two input signals and the EMI is the **same** to both inputs. Because the amp is looking for what is different, EMI gets rejected.

The result is that the cable plays little or no role in the overall sound of a system. There are other factors that contribute to why this is so that have not been discussed. I find it quite odd that this technology has existed now for close to 70 years but still gets a lot of resistance (if you will pardon the expression) from audiophiles; eliminating cable interactions is a big part of obtaining neutrality in an audio system.

I was designing satellite systems when you were wearing bell bottoms.

It could be that you know so much that you have forgotten more than I will ever know. That *could* explain your lapse of basic communications knowledge essential to satellite technology. But Occam's Razor https://en.wikipedia.org/wiki/Occam's_razor
suggests a simpler explanation.

"Thanks for the psychoanalysis, Mopman. "

Mocking my moniker makes me doubt your sincerity but you are welcome anyhow.   I sincerely hope it helps but I will manage my expectations there.