Grounded Speaker Cable

I've never heard of such a thing. Who makes this cable? It sounds like it could be an issue with some amplifiers that do not share common grounds.

It seems like it could be a problem with a floating ground, it definitely wouldn't work with one pair of speakers I own.

I couldn't find a reference to that cable, but guessing it's shielded and that's what the ground is for?

Here's an interesting article on the grounding debate that may explain it:  Grounding and shielding: No size fits all

Personally, I've been eyeing Analysis Plus' speaker cables because of their approach to shielding.

Tannoy speakers use a earth ground wire see here @ 6:39.

Mike

Makes me wonder whether the separate ground wire could cause a ground loop hum due to too many grounded items. 

@ditusa These speaker cables apparently have a ground wire running from the cable itself to a nearby outlet. If the purpose of this is to reduce RF (as with Tannoy), then it may be more useful in a city, where a lot of RF exists typically, instead of in a more rural area.