Some cables like MIT have rectangular boxes built into them, evidently for resistance matching or some other unspoken reasons. Makes sense that these things are directional. Other than that, there is no logical explanation for why a wire would sound any different in one direction or another. Diodes are directional in nature, allowing current flow in one direction and protecting against current on the other (specified as reverse voltage breakdown). A wire is a bidirectional conductor, not a diode. Plenty of 'philes would argue with me, but common sense dictates a wire is a wire is a wire....
directional cable?
Recently, a hi-fi store loaned me a certain speaker cable and indicated that the cable should be installed in one direction only. When I mentioned this instruction to a friend of mine who is an electronics engineer he laughed for an uncharacteristically long time and then wondered aloud why someone would apply directional bias to a signal that should move equally in either direction. If that were not the case he said you would have some form of diode. Reversing the cable made no audible difference but I have no idea what sonic traits I should listen for. Can anyone shine some light on this?