OPPER CLAD ALUMINUM (CCA) - CCA wiring provides a good conductor for power transfer. This is the most economical option when choosing power or ground wire. Systems that require more power should consider OFC wiring. Allows free, wide and seamless adjustment of the required physical properties of this wire such as flexibility, elasticity, and impact resistance. PREMINUM SPEAKER WIRE u2013 Use this DS18 Speaker Wire Cable thatu2019s build quality stranded conductors to build this professional grade speaker wire audio cableNever stop innovating attitude - DS18 stands out from other brands with our progressive designs and unwavering commitment to delivering the most technologically up-to-date products on the market.