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Everything in Music Since 1958
Everything in Music Since 1958

Zoom B2 Four Bass Amp and Effects Emulator Pedal

by Zoom
Original price $249.99 - Original price $249.99
Original price
Default Title: $249.99
Current price $249.99
♫ In stock
About Inventory Status

Call or text us at 301-946-8808.

In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions

Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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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.


  • 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: 256x128 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-2-WHXA
UPC: 884354028138

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Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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