Zoom B1 FOUR Bass Multi-Effects Pedal

The Zoom B1 FOUR is an all-in-one, ultra-versatile multi-effects processor built specifically for bassists who want powerful tone shaping, looping, and rhythm in a single stompbox.

Key Features & Benefits

• Comprehensive Effects Library: Offers over 60 built-in effects, including essential bass staples like octaver, fuzz, synth, plus modulation, delay, and more. 
• Amp & Cab Modeling: Includes 9 classic amp and cabinet emulations — think Fender, Ampeg, Aguilar — to help you dial in professional rig tones. 
• Flexible Signal Chain: You can run up to 5 effects at once, chained in any order for deep tonal experimentation. 
• Looper: Record up to 30 seconds / 64 beats of your bass playing, then layer overdubs to build a looped arrangement. 
• Built-In Rhythm Machine: Comes with 68 drum patterns (4/4, 3/4, and more) so you can jam or practice with a full backing track. 
• User Patches & Autosave: Save up to 50 of your own patches, and auto-save backs up every tweak and setting automatically. 
• Performance Modes:
• Preselect Mode lets you switch patches silently without interrupting your current sound. 
• Stomp Mode lets you turn individual effects on or off with your foot. 
• Chromatic Tuner: Built-in tuner supports standard bass tuning so you can tune up easily between songs. 
• Inputs / Outputs:
• Standard mono bass input (supports both active and passive basses) 
• Auxiliary input (mini-jack) for jamming along with music players
• Output jack works for both amp and headphones. 
• Portable & Power-Flexible: Runs on 4 AA batteries (about 18 h), or can be powered via USB or optional Zoom AD-16 adapter.
• Software Integration: Compatible with ZOOM Guitar Lab, letting you download more patches, edit effects, and back up your presets. 
• Compact & Rugged: Lightweight design that’s easy to add to any pedalboard — great for rehearsal, performance, or home practice. 

Why You’ll Love It

• It’s a complete tone tool for bass — no need for a bunch of separate pedals: gain, modulation, synth, amp sims, and more are all there.
• Perfect for songwriters or solo bass players — the looper + drum machine combo makes it easy to build loops or jam with structure.
• Extremely flexible for live playing: you can seamlessly switch patches or toggle effects as you perform.
• Great for beginners and seasoned players alike — its intuitive interface means you don’t need to be a tech expert to get creative.
• Reliable power options make it reliable for both gigging and home use.

If you’re after a powerful, bass-centric multi-effects pedal that gives you a full tonal palette and live-friendly performance tools, the Zoom B1 FOUR is a smart, all-in-one solution.