AudioQuest SLiP XTRM 14/4

Perfect-Surface Copper (PSC) & Long-Grain Copper (LGC) Conductors
This cable uses a carefully finessed combination of Long-Grain Copper (LGC) and extremely high-purity Perfect-Surface Copper (PSC). LGC has fewer oxides within the conducting material, less impurities, less grain boundaries and definitively better performance. The astonishingly smooth and pure PSC further eliminates harshness and greatly increases clarity.

True Concentric Conductors
While Semi-Solid Concentric conductors use fewer, larger strands that do not change position down the length of the cable, True-Concentric conductor technology pushes this concept even further by spiraling each successive layer of strands in the direction opposite to the one beneath it. Because this arrangement places more contact pressure at the points of contact, rather than lines of contact, the overall strand interaction is meaningfully reduced. The net sonic result is lower distortion, improved resolution, and greatly reduced harshness and confusion.