How To Tell Fake Cardas Cable

How can u tell between a real Cardas and a fake Cardas. I know there are some fake ones on the market. Can u tell by just eyeballing it. I am getting the GR cardas cable.
Just listen - it should be immediately obvious.
Try here:

Cardas fakes
Just think if some poor soul bought some fakes and is just learning about it by looking at the site Cardas fakes is screwed if he bought 90 days ago on the Gon. I had a disput with a member on this issue and 60% thought it was to late to cry about it because I caught it to late (90 days).
Do you mean by sound alone?