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