Material: oxygen free copper The diameter of the wire is 17mm, the inner double layer of internal and external insulation, the outer layer of high specification blue PCV insulation, 3 thick 4 square multi-strand oxygen-free copper cores. Structure features: The use of good sound oxygen free copper (OFC) as the main material, anti-wear, anti-interference, strong flexibility, the inner high-density pure copper screen mesh, to ensure the smooth passage of power. Suitable for power cord, insert due to the seat connection line, or used to rub machine, or used to rub socket and so on! Sound characteristics: In addition to the medium frequency sweet, transparent, good texture, low frequency strength has been greatly improved, low frequency strong. The full frequency band is more flat, the sound is more vivid, the details are richer, the sound field is significantly improved, the sound and image are clearer, the music background is more quiet, and the replay effect is comprehensively improved.