RCA type ultimate line cable employing high-purity 7N-Class D.U.C.C. Achieving both a sense of quietness and density, maximizing the performance of your equipment. Luxman's high-end genuine 15000 series cables are the ultimate flagship reference cables, completed by pouring in various technologies and know-how cultivated over many years of developing audio amplifiers. My impressions after using it: vocals come forward and are clear, high frequencies are not harsh, bass is well-defined, and the resolution is extremely high. There is no listening fatigue. While it depends on the system and individual preferences, it's certain that it will result in a high-quality sound. I am selling it due to a system change.