Zoom B1 Four Bass Guitar Amp M ...

£89.00 In Stock

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Zoom B1 Four Bass Guitar Amp Modeller and Multi Effects Processor Pedal

RRP £118.80 Save £29.80


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Manufacturer's ID: ZFXB1FOUR

What we say:

At A Glance:

The Zoom B1 Four is a compact pedal ready to take your low end to new heights. With over 70 effects, 9 amp models, and a built in rhythm section it has everything you need to practice.

Features We Love:

Huge Range of Tones

With over 60 effects and 9 amp models you have a huge range of tones for your bass. Choose from classic amps, and blend them with effects such as octaver, bass synth, and fuzz tones.

Guitar Lab Software

Connect your B1 Four up to your computer via USB to use the Guitar Lab Software where you can explore different patches, effects, and more!


A built-in looper allows you to loop up to 30 seconds and overdub that section endlessly. You can use this to create multi-layer arrangements.


  • Lightweight
  • Huge range of tones
  • Flexibility with Guitar Lab Software


  • B1X FOUR offers 71 built-in effects
  • 9 amp models for simulating classic rigs
  • Up to 5 effects can be used simultaneously, chained together in any order
  • Looper for recording up to 30 seconds / 64 beats of CD-quality audio with seamless start and end times
  • Guitar Lab software for creating, editing and managing effects and patches
  • 68 built-in rhythm patterns which can be used in conjunction with the Looper
  • 50 memory locations for storing user-created patches
  • Swap function makes patch organization a breeze
  • Auto Save function for automatic saving of all patch parameters
  • Pre Select function allows silent patch selection while the current patch remains operational
  • Onboard chromatic tuner supports all standard bass guitar tunings, including low-B, high-C, and drop tunings
  • Input jack accepts standard mono bass guitar cable (both active and passive instruments supported)
  • Auxiliary input jack for connection of personal music players
  • Output jack for connection to amp or headphones
  • Backlit LCD with contrast control for easy viewing in low-light environments
  • Lightweight and small enough to fit in your gig bag
  • Easily integrated into any existing pedal board-Runs on 4 AA batteries, with alkaline battery life of 18 hours
  • USB port for firmware updates, power and connection to Guitar Lab
  • Optional AC adapter

Technical Specifications

Maximum number of simultaneous effect 5
User patches 50
Sampling frequency 44.1 kHz
A/D conversion 24-bit, 128× oversampling
D/A conversion 24-bit, 128× oversampling
Signal processing 32−bit
Display 128x32 dot matrix LCD
INPUT Standard mono phone jack
Rated Input Level -20dBu
Input Impedance 470kΩ
AUX IN Stereo mini jack
Rated input level -10 dBu
Input Impedance 1kΩ
OUTPUT Standard stereo phone jack (combined line/headphone)
Maximum output level Line +2 dBu (10 kΩor more output impedance)
Headphones 17 mW + 17 mW (32Ωload)
Input S/N 120 dB
Noise floor (residual noise) -97 dBu
Power AC adapter: 9V DC 500mA center negative (ZOOM AD-16)
4 AA batteries (about 18 hours continuous operation time when using alkaline batteries with the LCD backlight off
Power can also be supplied through the USB port.
When using a cable designed only for power, other USB functions cannot be used.
Size & Weight Height: 156 mm (D) × 130 mm (W) × 42 mm (H)
Weight: 340 g (excluding batteries)

Customer reviews

Overall Rating 4.7/5 (6 reviews)

Brilliant - it was a present for my bass-playing grandson and he is delighted with it (especially the drum tracks).

GORDON T. - 30/12/2021

Great little practice tool with some cracking sounds

Mark D. - 21/9/2021

Works well as expected. .

Sean D. - 16/9/2021

Susan S. - 13/12/2020

Lots of bang for the buck. It's a shame the casing is plastic rather than metal in terms of surviving the road but it's not a deal breaker given the price.

George L. - 17/11/2020

Really good pedal, bought for running my head phones and pc online lessons through, but does a whole lot more... was going to but the VOX headphone amp but this does the same with added loads of stuff and looper for just £30 more..... get one its fun :)

Stuart C. - 25/5/2020

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