Since the beginning, AudioQuest has pioneered the use of superior metals, yet even we were surprised by the huge leap in performance attained through the astonishingly smooth and pure surface of Perfect-Surface Copper (PSC). Proprietary metal-processing technology protects the wire's surface at every stage of drawing and fabrication. When high-purity low-oxide copper is kept as soft, pure, and smooth as possible, it becomes a wonderfully low-distortion conductor. In a conventional cable, electrical and magnetic interaction between strands is one of the greatest sources of distortion, often causing a somewhat harsh, dirty sound. Solid conductors are fundamental toward achieving a very clean, natural sound.