CCA=Copper-clad aluminum , is a conductor composed of an inner aluminum core and outer copper cladding.The primary applications involve of this conductor revolve around weight reduction requirements. These applications include high-quality coils, such as the voice coils in headphones, portable loudspeakers or mobile coils; high frequency coaxial applications; such as RF antennas; CATV distribution cables; and power cables. CCA became extremely popular on emerging markets as a cheap replacement for copper category 5e twisted pair cables.