This cable is designed to extend the reach of hard-wired headphones and adapt a mini stereo phone plug to a stereo phone jack. It may also be used as a stereo extension cable. Hosa MHE-310 Headphone Adaptor Cable, 3.5mm TRS to 1/4" TRS, 10 Feet features: Nickel-plated contacts for rugged durability and efficient signal transfer Oxygen-Free Copper (OFC) conductors for enhanced signal clarity OFC spiral shield for effective EMI and RFI rejection and flexibility Specifications: Length: 10 Feet Connection: 3.5 mm TRSF to 1/4" TRSM Conductors: 22 AWG x 2 OFC Sheild: 88% OFC Braided