Hi Gary.
What I am postulating is (and this is a long way off topic) if a socket (DIN or whatever type you like) in the back of, say, a CDP/amplifier/supercap/whatever is physically vibrating (because the box itself is vibrating) then wouldn't this vibration tend to 'rattle' the plug which is inserted into it?
And wouldn't this 'rattling' tend to change the physical point(s) of electrical contact between the socket and the plug with time? And might this not ****-up the sound somewhat? I think that this is primarily how Mana works with solid state equipment.
It's only a pet theory, but it's obviously right ;-)
For the record, I do actually think that good signal interconnect cables do make a slight but definite difference. But that is not the issue here, which is directionality....
BBC2 9pm Genius of Mozart, see you later.