Arcana E-Box expansion for Arcana StrumIntroducing the Arcana E Box expansion for Arcana Strum The E Box is an expansion accessory that enhances the Arcana Strum, allowing it to be controlled using standard minijack switches. Designed to be highly adaptable, the E Box makes the Arcana Strum accessible for individuals with different physical abilities, including those who play with their feet, mouth, or other parts of the body. With six inputsfive to replace the instrument's keys and one to