6N OCC Balanced AUDIO CABLE For Sennheiser HD660S HD6XX HD58X Headphones 4.4mm is used for balance players of other brands such as Sony and Fiio 2.5mm for 2.5mm BAL AMP balanced DAC player 3.5mm is the standard connector for mobile phones, music players product description Length 150 cm / 5 ft Product 1 year warranty 3.5mm gold-plated plug The latest upgraded cable, the wire feels more comfortable and soft. long life. OCC silver plated twisted pair (4 core * 30 * 0.05 / OD 2.2 * 2) (Built-in 120 high-quality silver-plated copper wires) The diameter of the copper wire is 0.05mm, the overall diameter of the wire is 2.2*2mm (double parallel), and it contains 250D bulletproof wire About OCC, Monocrystalline copper (OCC) Features 1: OCC purity of 99.9999%; 2: Resistance 8% to 13% lower than the average copper More clarity, better sense of space, improved resolution, transparent and smooth sound, clearer and more layered details; moist mid-frequency, magnetic vocals; full and powerful low-frequency. === Shipping Terms We only ship to the confirmed address provided by PayPal. Before you pay, please make sure your address in PayPal matches the address you would like us to ship to. ? We ship items to Worldwide Buyers' Information: We strive our best to provide you the most reliable, affordable way of shipping service. But sometimes international delivery is highly depended on the courier company and local customs/duties. If you do not receive your item on time, please contact us immediately for further assistance. Thank you for your understanding. Shipping Method We use China Post and Singapore Post delivery. Items are generally shipped out the next business day after your payment has been cleared (Sat. Sun. excluded.). We offer combined shipping which will save your shipping cost greatly for your multiple purchases. Please do not pay until you make your last purchase. International Buyers - Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the shipping company or collected when you pick the item up. These fees are not additional shipping charges. Shipping Time All items will be shipped within 72 business hours upon receipt of payment (except Saturday and Sunday). ? It takes about 15-90 days to ship to United States, Canada,Russia, Europe, Asia or other places worldwide.