Speaker cables are most often used to connect new speakers or a subwoofer. We mainly divide them according to their cross-section, but the price also depends on the composition of the conductor. Speaker cable, if you want a two-line, can be made of the most affordable mixed CCA copper, oxygen-free OFC copper with 99.99% purity, or even the highest quality OCC copper. Compared to CCA cables made of a mixture of aluminum and copper, OFC copper cables have better heat dissipation, lower specific resistance, more stable voltage or less susceptibility to oxidation. The highest quality OFC cables have tinned strands for corrosion protection and lower operating temperature.