Many headphone or earphone cable companies around the world source their copper from Japan. Actually, the inventor of OCC is Japanese. Strange enough, they have fair prices up there. I found a company, Bispa, available through Amazon Japan, that sells some very fine cables. I got a Bispa Ryou cable for my AKG N5005 a few days ago and couldn't be happier. I paid USD 260 for them, including shipping and customs taxes. I'm not experienced enough with cables to say they sound like more expensive ones but to me, they DO sound noticeably better than stock cables.
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