The Zoom B1X Four Bass Multi-Effects Pedal offers over 70 effects and 9 amp models, letting bassists create custom sounds with up to 5 effects in any order. Its built-in expression pedal allows real-time control over parameters, while the 30-second looper and 68 rhythm patterns add dynamic performance options. The display screen and Zoom Guitar Lab software make customization easy, supporting 50 user-preset slots. It features multiple power options4 AA batteries, a ZOOM AD-16 AC adapter, or USB powerand versatile connectivity for instruments, media players, amps, and headphones. Bundle Items Include: Zoom B1X Four Bass Multi-Effects Processor with Expression Pedal, 4x AA Batteries with Charger, Cleaning Kit, Wire Ties.