Advanced Multi-Gauge Conductor Design by Jay Victor All audio conductors are made from premium Cardas Grade One Copper Premium PE air tube insulation Triple-layer shielding from EMI and RFI noise (a silver-plated copper braided shield, an aluminum/mylar foil shield, and a carbon-filled PE shield) Advanced thermoplastic rubber jacket is tough, yet very flexible Ground wire run Prime 750 RCA Termination - Ultra low mass gold-plated beryllium copper spring-type ground contacts Ultra-low-mass hollow direct gold-plated tellurium copper center pin Advanced polymer insulator Non-magnetic brass cover is treated with a tough-as-nails scratch-and-chip-resistant black chrome plating Your LPs will love Pangea Audio’s Premier XL Phono Cable. Your vinyl records will sound cleaner, clearer, and better balanced across the entire spectrum when you upgrade to XL. Further enhancing the performance are Cardas Grade One Copper conductors, premium PE air tube dielectric, triple shielding, Pangea Audio's Prime 750 RCA connectors, and a ground wire run to combat turntable hum. Both the signal and the return conductors are insulated with PE air tubes, which, until very recently, were previously found only on much more expensive audio cables. This manufacturing technology has improved, and Pangea Audio is now able to use these advanced insulators, while keeping the price tag affordable. Premier XL cables feature three layers of shielding from RFI and EMI noise. These layers consist of a silver-plated copper braided shield, an aluminum/mylar foil shield, and finally a carbon-filled PE shield. This last item, the carbon-filled PE shield, is a recent innovation and provides another layer of shielding for an even quieter cable without compromising cable flexibility. The premium Prime 750 RCA connector used with Premier XL Phono Cable features a special ultra-low mass design that takes best advantage of the fine properties of exotic metals, while avoiding technical problems like eddy currents that are caused by using higher mass metal contacts. Prime 750 has an ultra-low-mass, hollow, direct-gold plated Tellurium Copper center pin and ultra-low-mass direct-gold plated beryllium copper spring-type ground contacts. Instead of a heavier metal ring, Prime 750 uses an advanced polymer insulator to hold the connector together – further reducing the amount of metal required in the connector. The outer shell or cover is made from non-magnetic brass treated with a tough-as-nails scratch-and-chip-resistant black chrome plating.