Addictone is a custom guitar builder based in Shibuya, Tokyo, operated by Future Sound Design. The company produces its bodies and necks at a workshop in the United States, then handles painting, assembly, and final setup in Japan, positioning itself as a Made-in-Japan boutique brand with an emphasis on hand-selected tonewoods and hardware.

The lineup centers on bolt-on solid-body electrics in familiar S-style and T-style silhouettes, with named models including the Arena, Echo, Nova, Classic Modern, and Modern Series, along with fully custom orders. Builds are typically offered with high-end pickup options such as Bare Knuckle, and the brand also produces basses alongside its guitar range. Finishes range from vintage-inspired relics to modern metallic and sparkle treatments.

Addictone has built visibility through collaborations with Japanese players — notably BAND-MAID guitarist Kanami, who has been associated with Modern Series specs — and through demos and reviews from international guitarists, including a feature of the Arena Koa model by Reb Beach. Instruments are sold direct through the company's site and through Japanese retailers such as Ishibashi, as well as on Reverb.

Addictone has 6 products cataloged on Equipboard, including Solid Body Electric Guitars. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include Kanami Tono.