The BOSS ME-90B is an innovative bass multiple effects processor designed to enhance creativity for bassists. It features 61 effects specifically optimized for bass, alongside 10 AIRD bass preamps for dynamic tone shaping. With a user-friendly interface, it offers hands-on control through expression pedals and direct access footswitches, allowing musicians to create and perform effortlessly. The ME-90B can connect to various sound systems and computers, making it highly versatile for live performances and studio work. Additionally, it includes powerful processing capabilities with 24-bit AD and 32-bit DA conversion, ensuring superior sound quality across its effects library.