Tributaries - 8AD - Series 8 Digital Audio Cable (Single) The Series 8 begin with extremely high grade linear crystal copper (LC-OFC) that is silver plated to support higher frequency performance specifically for digital audio applications. To maintain a consistent 75-Ohm impedance, the coaxial Series 8 S/PDIF Digital Audio cable’s 18AWG silver-plated center conductor is surrounded by three perfectly concentric layers of dielectric which consist of a skin, foamed PE and a final skin. Heavy triple shielding block noise from entering the signal path. The 8AD precision engineering supports wide bandwidth applications to transmit multichannel audio accurately. Tributaries 8AD is a high-performance 75-Ohm digital audio coaxial cable made by hand. The 8AD is designed with heavy RG6 18AWG 2.5% Long-Crystal Oxygen-Free (LC-OFC) copper conductors for superior signal transfer. The 8AD is terminated with orange 75-Ohm RCA connectors. The wires are hand-soldered with high-quality lead-free solder to solid gold-plated brass full body RCA connectors. The shield is surround-soldered inside the collar making an ultra secure ground connection and unbeatable strain relief. The connection is protected with solid brass connector covers that have colored rings for signal identification.