The 7N OCC copper Single Crystal Silver Plated wires provide clear sound, and a protective layer is added to eliminate noise interference problems, you will enjoy matchless HiFi sound and maintain original sound quality of your headphone, Haldane GrayJelly 4.4mm Balanced Male To 4pin XLR Balanced Female Audio Adapter Cable 4.4mm M To 4pin Xlr F Cable I.429990042 Headphone Cable TOP-HiFi Single Crystal Copper 3.5mm TRRS Balanced Male To 4.4mm Balanced Female Audio Adapter Cable 3.5mm To 4.4mm I.429990042 HiFi Cable The 4.4mm Balanced male is compatible with SONY WM1A, NW-WM1Z, PHA-2A, ZX300A Audio player & Power amplifier / Monitors / Speaker / HIFI equipment and so on players with 4.4mm Balanced port, Extension Cords The connectors shell are made of the walnut wood / Solid Wood - Walnut + Brass Gold Plated , The 4., 4mm Balanced male is compatible with SONY WM1A, NW-WM1Z, PHA-2A, ZX300A Audio player & Power amplifier / Monitors / Speaker / HIFI equipment and so on players with 4., 4mm Balanced port, Extension Cords The inside cable is made of the 6N OCC copper Single Crystal Silver Plated wires, each side include 2 strands * (0.08mm*25 cores 0.08mm*37 cores) 6N OCC copper Single Crystal Silver Plated wires, that Superb Premium Wire, Independent Shield among L, R The inside cable is made of the 6N OCC copper Single Crystal Silver Plated wires, each side include 2 strands *(0., 08mm*25 cores + 0., 08mm*37 cores) 6N OCC copper Single Crystal Silver Plated wires, that Superb Premium Wire, Independent Shield among L, R .