The Zoom B1 Four takes your low-end to new heights with over 70 effects and amp models, looper and a built-in rhythm section. Plus, access Zoom Guitar Lab’s additional library of downloadable effects. Beyond the Bass-ics Craft your signature sound with more than 60 traditional and boutique effects, such as octaver, bass synth and fuzz. Classic Amps Recreate your on-stage sound with 9 classic amps and cabinets like Fender, Ampeg, Aguilar and more*. A More Hands-On Approach Pick your pedal up off the floor for desktop use and easily dial in tones and settings to the exact levels you need. Rhythm Section Play your bass to 68 different drum patterns! The B1 Four series offers a built-in drum machine with a variety of rhythm patterns in 4/4, 3/4 and more. Loop Yourself In Lay down a bassline up to 30 seconds, and then endlessly overdub your performance to build a dynamic, multi-part arrangement. Live Performing Use either of 2 performance modes to seamlessly switch up patches and effects during live shows. Preselect mode lets you jump from patch to patch without affecting your current sound, while Stomp mode lets you turn individual effects on and off.