Graceline by Black Cat Cable! Exquisite, limited-production high-performance audio cables. Designed and built by Chris Sommovigo in Alpharetta, GA USA. This is a new line of cables base on the Setsuna architecture and idea, which is very different from how the Black Cat Cables are made. Setsuna turned out to be so special that I decided to make some improvements to the design, and then project it into three levels.