AudioQuest's Flat Series speaker cable is built around a Semi-Solid Concentric design. While this is not as transparent as AudioQuest's Solid-Core Conductors, Semi-Solid wire is significantly more resolved than conventional stranded bundle wire.
In a conventional multi-strand cable, distortion caused by electrical and magnetic strand interaction is compounded as each strand changes position within the bundle. In an AQ Semi-Solid Concentric cable, strands within the bundle maintain their fixed relationships, significantly reducing distortion. Long-Grain Copper (LGC) allows a smoother and clearer sound than cables using regular OFHC (Oxygen-Free High-Conductivity) copper. LGC has fewer oxides within the conducting material, fewer impurities, fewer grain boundaries, and definitively better performance.