Producer/DJ unit consisting of K404 and XTAL. Their name comes from Sequential Circuits drumtraks. They have released 2 albums from SWC. In addition, they have contributed music to many compilations and done many remixes. In 2010, they released 12-inch single "Starburst" from Internasjonal, a label organized by Prins Thomas in Norway, and 12-inch single "Weekend Lights" in 2017. They also organizes "DK SOUND," an industrial rave party held on the rooftop of a factory in the Kawasaki factory zone. Although it has been on hiatus since 2016, an online streaming version, "DK SOUND DIGITAL" was held in the summer of 2020.