Zoom B1on, multieffect for e elctric bass, 75 bass effects including distortion, dynamics and modulation effects, and reverbs, delays and many amp modelings, 30 Seconds Looper in CD quality, 5 effects can be used simultaneously, 100 memory locations, convenient preset pre-selection by Pre Select Feature, Built-in drum machine with 68 drum patterns, Aux In for external audio sources, Large backlit LCD display, USB port for firmware updates, powered by 4 x AA batery (20h) or optional AC adapter #108096 (not included), dimensions 155 (D) x 146 (W) x 43 (H) mm