Zoom B2 Four Bass Amp and Effects Emulator Pedal

Unleash Your Bass with the Zoom B2 Four Bass Amp and Effects Emulator Pedal

Introducing the B2 FOUR Amp and Effects Emulator, powered with Zoom’s Multi-Layer IR technology and 6 iconic DI models. It’s never been easier to craft the perfect low-end tone.

• 104 effects including models of famous boutique effects and preamps – combine up to 5 effects simultaneously
• 250 presets designed to give bassists the ability to recreate the sound of popular songs from the 50’s to today
• 4 rotary encoders allow for quick adjustments to effects parameters as well as output settings
• 60-second built-in looper allows you to build grooves, while the 68 beats from the on-board rhythm machine are the perfect companion for practice
• Use as a 2-in/2-out audio interface to connect the B2 FOUR to a computer or smartphone with your favorite effects and amp models
• With an expanding library of patches and effects, bassists can continue to expand their sound with the Handy Guitar Lap for B2 FOUR app (for iOS), available to purchase on the Apple App Store

Rich Amp and Cabinet Models

Each amp model is built with Zoom’s innovative Multi-Layer IR’s, to recreate the tonal characteristics of playing through classic amps and cabinets. The impulse responses were captured from cabinets at 3 different levels and are activated based on the volume of your bass. 

Built for Live Performance

When you need to plug directly into the house PA, the lightweight and portable B2 FOUR has you covered. It features six DI models that recreate the tone of world-class direct boxes.

A balanced output helps you connect directly to a PA or interface, while the stereo outputs can connect to an amp. The instrument input has a switch to change the impedance from 1M to 10M ohms, giving you a cleaner tone for upright basses equipped with piezo pickups.

SPECIFICATIONS

• Maximum number of simultaneous effects: 5
• User patch memories: 300
• A/D conversion: 24-bit 128x oversampling
• D/A conversion: 24-bit 128x oversampling
• Signal processing: 32-bit
• Display: 256×128 dot-matrix LCD
• Input
• Standard mono phone jack
• Rated input level: −20 dBu
• Input impedance (line): 1 or 10 MΩ (switchable)
• AUX Input 
• Stereo mini jack
• Rated input level: −10 dBu
• Input impedance (line): 10 kΩ
• Left/Right Output 
• Standard mono phone jacks
• Maximum output level: +11.4 dBu (when output impedance 10 kΩ or higher)
• Balanced Output
• XLR jack
• Impedance: 100 Ω (HOT-GND, COLD-GND)/200 Ω (HOTCOLD)
• GND LIFT (switchable)
• Outputs
• Phones
• Stereo mini jack
• Maximum output power: 33 mW + 33 mW (into 32Ω load)
• Input S/N: 124 dB
• Noise Floor (Residual Noise)
• Left/Right: –96.0 dBu
• Balanced Output: –100.0 dBu
• Phones: –96.0 dBu
• Control input: FP02M input
• Power AC adapter: 9V DC 500mA center negative (ZOOM AD-16)
• USB 
• USB 2.0 Type-C port (use cable that supports Type-C)
• Handy Guitar Lab: USB 1.1 Full Speed
• Audio interface: USB 2.0 Full Speed, 32-bit, 2-in/2-out
• Use a USB cable that supports data transfer. USB bus power is supported.

Size and Weight

• Dimensions: 146 x 249 x 7mm (D x W x H)
• Weight: 906g

Manufacturer: Zoom
Model: B2 FOUR
SKU: I734873-N-0-WHXX
UPC: 884354028138

We are Chuck Levin’s Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.