Made of high quality pure copper, gold plated processing, wear-proof, oxidation and corrosion resistance. Reliable connection, good conduction, with maximum single transfer and durability, no distortion. Suitable for microphone, audio equipment, mixer, subwoofer etc. other RCA-enabled device audio signal connection. Good conduction, excellent sound quality, truly pure and no-noise signal transmission, very suitable for professional sound card output. BEKER provides 2 years worry-free warranty, 90 days refund and replacement