Directional?


What causes a cable (or interconnect) to be 'directional'? Can it really be true that electricity flows 'better' in one direction than the other?

Just curious. Does anyone have insight into this?

Gasbose
128x128gasbose
There are plenty of other threads that cover this subject. Please start reading --don't start the subject up again for the literal hundredth time.

thanks.
The only reasonable answer to this is shielding should be connected only at the source. Not all audio cables are shielded, and chances are good even this makes only a tiny difference. 
What Audioquest(et al) think(s): https://www.audioquest.com/theory-education/article/83-directionality-its-all-about-noise Possibly part of the reason OCC(Ohno Constant Crystal) wire is so popular, in the industry's better cabling.
Your transparent plastic covered from the local shop selling 10 - 14awg OFC copper speaker cable isn't directional. Only shielded cable terminated at on end (and marked by arrows or some such) may be directional. You need to look at the cable. Some do some don't, some are, some are not. Does it make a difference? I don't know because I haven't been able to afford such cable.
Thanks, Rodman, Erik and amg!

So can you say how the 'Shielding' works? I take it there's some type of metallic cover around the cable. Per the Audioquest article, it's only attached at one end -- but to what? Does it connect to the negative side of the interconnect? If so, what's the significance of it only connecting at one end?

If y'all understand, I'd love your insight. Thanks!

Gasbose
Gasbose

A shielded cable has a foil or braided sleeve around the insulated conductors and is only attached to one end of the cable on the plug to the ground. Typically the shield is on the the end of the cable away from the source component. Power cords are similar with the shield only tied to the plug end that plugs into the wall receptacle. If you tie the shield to both ends of the cable then it’s no longer a shield but basically a ground which the cable already has. The shield is basically picking up EM/RFI and transferring that to the end of the cable before it reaches the signal conductors. Braids, twisting the conductors help to cancel noise as well.

As with anything in audio, best to try for yourself and go with what sounds best to you. A lot of cables are not shielded but my experience and ears tell me there is still a difference. I find that when you run a shielded cable in the incorrect direction thes stage collapses - you lose openness and things seem less relaxed.

Basically the shield is not intended to pass the signal from one component to the other but pick up outside noise between the components so not to interfere with the signal. The shield is only tied to one side at the ground. Cable geometry is a lot more complex than this. Hope this helps or makes sense.
Without intentionally wanting or meaning to plagiarize @nonoise, "no, not again".
I mark the direction of the cables I build for one reason. So once burned in if the owner pulls them off and back on he can be sure he is putting them back  in the same direction the signal originally burned in the cable. 
"Directionality and Burn-in" Let me put on my Tin Foil hat and think about it!
Uh, guys, no one is disputing that shielded cables are (usually) directional. So the question is really about, or should be about, non-shielded cables. Let me answer a question with a question. Why do many BIG audiophile cable manufacturers like Audioquest control directionality of their all their cables, including non shielded cables, power cords and HDMI cables? Anti Cables controls directionality and they don’t have shields or even jackets. Hel-loo!! Hint: it’s probably not (rpt not) to drum up business by appealing to audiophiles’ innate curiosity or that they think the terminology “directionality” is cool.

note: graphene is more effective than tin (aluminum) so a graphene hat will (theoretically) be more effective, no?
Thanks, all -- excellent explanation. I appreciate your willingness to share your knowledge.

Regards.