Used Zoom B1 FOUR Effect Processor

The Zoom B1 FOUR is a compact multi-effects processor for bass guitar, featuring over 60 built-in effects, amp modeling, a built-in looper, and a drum machine. This used unit is in great condition and fully functional. It offers five simultaneous effects chains with simple controls and includes a tuner, AUX input, and USB connectivity for firmware updates and patch management. Perfect for practice or performance, the B1 FOUR delivers professional tone in a portable package.