Shunsuke Saga is a Japanese bassist, youtuber and entrepreneur living between Yokohama, Japan and Seoul, South Korea. After graduating from high school, he followed an apprenticeship as a luthier under the guidance of Hiro Yamada (stillblu guitars).

Afterwards, he started sharing his passion for tone, beautiful instruments, and innovation by creating fun informational content on social media. At the same time, he started purchasing secondhand instruments, repairing, and upgrading them. This is how Geek-In-Box was born and became one of the most important platforms & shops in Japan. When Shunsuke is not travelling to meet the most exciting bass brands, you will find him playing sessions in clubs in the Tokyo area. The reason he is proud to endorse RockBoard, is as follows “I believe RockBoard by Warwick is the best system for all musicians.