WD®’s Copperhead Cables® By RapcoHorizon® Platinum Series Microphone Cables. The Platinum series takes a better grade assembly and adds the Neutrik NP2X hardware, which is very substantial and what is on many top-of-the-line assemblies these days. USA made oxygen free copper 18 gauge studio wire, with 95% braided shield for maximum reliability. Soft rubberized feel, Neutrik NP2X hardware, hand soldered, this cable has a unique two step two color shrink on each end for a quality look to back up the specs. Available in 15 foot, 30 foot and 60 foot lengths.