The Zoom B1X Four is a compact multi-effects processor built specifically for bass guitar, featuring an integrated expression pedal for real-time parameter control. Over 70 bass-optimized effects, amp models, and cabinet simulations give you a huge range of tones -- from classic tube warmth to modern slap compression to atmospheric ambient textures.

The expression pedal adds wah, volume, and other foot-controlled effects without needing a separate pedal. Five footswitches manage your patches and effects chains, and the built-in looper is great for practice and creative exploration. Battery power means you can practice and jam anywhere without being tied to an outlet. For bass players who want to explore effects and amp modeling without a complex pedalboard setup, the B1X Four packs impressive capability into a small, affordable package.