CCA (COPPER CLAD ALUMINUM) CCA wire offers the same signal frequency and reliability in terms of corrosion resistance to copper wire. The advantage of the CCA speaker wire is lighter and more flexible than copper wire. The cost of CCA vs Oxygen free copper is much lower and you can enjoy the same functions and reliability as copper wire without paying the extra cost for the installation. Tough, yet flexible white insulated jacket is market with a stripe on one side for polarity and is marked with FT count for easy installation.