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Zoom B1 Four Bass Multi-FX Pedal



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Product Description

Here's what Zoom say about the B1 Four:

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.

X is for Xpression

For added control, the B1X FOUR features an expression pedal that can adjust effects, such as volume, wah, delay and pitch.

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*.

You’ll Love Our Free Guitar Lab Software

ZOOM Guitar Lab offers an endless world of artist patches, effects and more. And with its ability to manage and backup all of your patches, you can experiment with endless combinations. 

Your New 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.

We’ve Got Your Back(up)

Turn on the auto save function and your patches and level settings will be instantly backed up as you create them.

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.

Key Features

  • B1 FOUR offers over 60 built-in effects
  • 9 amp models for simulating classic rigs
  • Up to 5 effects can be used simultaneously, chained together in any order
  • Built-in expression pedal for control over any parameter (B1X FOUR only)
  • Looper for recording up to 30 seconds / 64 beats of CD-quality audio
  • ZOOM 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
  • Auto Save function for automatic saving of all patch parameters
  • PRESELECT function allows silent patch selection while the current patch remains operational
  • Onboard chromatic tuner
  • Auxiliary input jack for connection of personal music players
  • Output jack for connection to amp or headphones
  • Lightweight and small enough to fit in your gig bag
  • Runs on 4 AA batteries, with alkaline battery life of 18 hours
  • USB port for firmware updates, power and connection to ZOOM Guitar Lab

Customer Reviews


12 reviews





Trusted Customer9th Feb 2024

Really cool effects unit with many possibilities. I do not have expert ears but it sounds great to me and I would recommend it to anyone looking for a compact easy to use effects unit with quality sounds.

Value 5Looks 4Durability 3Sound 5

Mr Glenn LEWIS18th Jan 2023

Value 5Looks 5Durability 5

Mr Craig Allinson27th Sep 2022

Value 5Looks 5Durability 4Sound 5

Trusted Customer14th Aug 2022

Value 5Looks 4Durability 4Sound 4

Mr Andrew Cassidy17th Jul 2021

Great selection of sounds in this little box. Easy to use and ideal for practice.

Value 5Looks 5Durability 4Sound 5

Victor Virag4th Jun 2021

Really affordable bass multi effects pedal with a ton of options to customize. It also has a pretty decent looper and drum presets.

Value 5Looks 5Durability 5Sound 4

Trusted Customer1st Jun 2021

Really useful for practicing with headphones, I like the fact it runs of battery and also has Aux in for playing along with my tunes. It has lots of options to create different tones, but you can just crack on with the first patch and get playing straight away.

Value 5Looks 5Durability 4Sound 5

Trusted Customer7th Jan 2021

The effects and looper are fun, but I mainly got this as I wanted to use it as a headphone amp, instead of bothering with a diddy practice amp. The fact it has drum patterns and I can plug my phone in to play along to makes it perfect for me. For home use it's construction is fine, and I have it sat on a table. It's plastic, so not sure it would survive gigging, but as I won't use it for that don't take my word for it. Runs off batteries too, or mains (adapter not included)

Value 5Looks 3Durability 4Sound 5

Trusted Customer21st Dec 2020

Great piece of kit learn new sounds and tones

Value 5Looks 4Durability 4Sound 4

Trusted Customer26th Nov 2020

great bit of tech at a great price

Value 5Looks 5Durability 5Sound 5

Finance available at checkout for orders £300+

How do I use instant finance?

It's simple! Just add the products you want to your basket and click the "Checkout" button in your basket. Go through the checkout process and tick the "Finance" option under "Select Your Payment Method". You can then choose which finance term you'd like to apply for, and change your deposit if you wish.

At the end of the checkout you'll be taken to the V12 Finance web site. This is where your finance application is processed. Assuming your application is accepted you'll be able to place your deposit and confirm your order right there.

Then, your order will come through to Andertons and we'll send you the goods. Get approval before 3pm and we'll send your order out the same working day (stock permitting) for next working day delivery!

Who can apply for finance?

You must: spend over £300, be at least 18 years of age, have been a UK resident for 3 years or more, be able to make repayments by Direct Debit, be in regular employment (minimum of 16 hours per week) including self-employment, or in permanent residence with your partner who is in regular employment.

Read More About Online Finance

Andertons Music Company's Registered Office: 58-59 Woodbridge Road, Guildford, GU1 4RF. Andertons Music Company acts as a credit broker and not a lender and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Andertons Music Company is authorised and regulated by the Financial Conduct Authority, firm registration number 716155. Credit provided subject to age and status.