This is the ZOOM B1Xon, a multi-effects unit for bass. It includes a wide range of effects, from distortion to spatial effects, and features an expression pedal for dynamic performance. You can cover all your bass sound creation needs with this one unit. The unit itself is included. An adapter for standard effects pedals worked fine. Operation has been confirmed, but since I haven't used all the functions on a daily basis, please understand that this is sold as-is, with no returns. [Main Features] ・Built-in with over 100 effects ・Can use up to 5 effects simultaneously (connection order can be changed) ・Equipped with over 30 rhythm patterns ・Looper function (30 seconds recording) ・Built-in tuner ・Expression pedal (supports wah, volume, pitch, etc.)