Blockbuster "INS Series" of ELEC, and with a focus on multi-based insulator "INS-BS", this made hybrid carbon fiber until the "INS-CF", made of high-rigidity stainless "INS-SP" (concave), "INS-US" (released a convex), we have succeeded in greatly expand the potential of the insulator by combining these freely. Its "combine fun-insulator" is widely accepted to audio enthusiasts, the record since its launch series total of 20,000 set more than the phenomenal sales *. It reaches in order to obtain a permanent place as an essential accessories around the legs that support the audio equipment. And we seek further possibilities of these "INS series", it was focused on the physical properties of the material with the natural stone. Physical properties of the material is the most important tuning point in the audio, this is a common design concept to insulator of ELEC electricity. It verifies the natural stone of properties ranging to 70 different, the end of repeating the repeated listening, and I found the performance and personality that stands out to Black Diamond and smoky quartz.