The OFC Rca cable is specially designed with gold contacts and made from OFC (Oxygen Free Copper). OFC is produced by melting and casting copper under a near vacuum atmosphere to lower the residual oxygen content. This reduces corrosion and enhances conductivity. The alloy hoods are made from Zinc Alloy with a heavy duty, dark blue individually screened cable. The Complete Highest Quality OFC Phono Cable. Look for the rhinocables badge to ensure your guarantee of quality.