Red River XLR > XLR Analog Audio Interconnect Cable Key Features & Technology Explained AudioQuest's Best Copper To the greatest extent presently possible, extreme-purity Perfect-Surface Copper+ (PSC+) conductors minimize distortion caused by grain boundaries. Metal-Layer Noise-Dissipation Metal-layer noise-dissipation shields noise effectively, absorbing and reflecting most RFI before it reaches the ground layer. Hard-Cell Foamed-Polyethylene Hard-Cell Foamed-Polyethylene's high air content minimizes energy absorption for clearer sound. Solid Conductors All conductors controlled for RF-noise directionality. Specifications Metal Solid Perfect-Surface Copper (PSC) Noise Dissipation Metal-Layer Geometry Triple-Balanced Insulation Foamed-Polyethylene Terminations Gold-Plated Signal Type Analog