audio-technica High-Resolution Headphone Extension Cord 0.5m AT645L/0.5 Only listened to for a few hours after purchasing new. Extension cord only. Features: * Star quad stranded wire for low-noise signal transmission. * Aluminum sleeve plug to suppress subtle vibrations. * OFC (Oxygen-Free Copper) conductors for clear sound quality. * Highly elastic elastomer sheath that resists tangling. * Gold-plated contacts for low contact resistance and resistance to aging.