A:Answer Using only the best components, technology, and construction, the engineers at Stinger set a goal to design and build the best audio interconnects available. That quest resulted in the creation of the Stinger 9000 series premium audiophile-grade interconnect. We used Pure Silver, Oversized Ultra OFC Long Grain Copper conductors, 2 layers of EMI noise rejecting shielding, and Continuous Connection Construction (C3) to name a few features. Check out the full description of our 9000 Series on the Stinger website.