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Zoom B2 Four Bass Multi-effects Processor

Bass Multi-effects Processor Pedal with 104 Effects, 250 Presets, Amp Models, 6 DI Models, 68 Drum Patterns, Looper, and USB Connectivity
7 Write review Item ID: B2Four
$249.99

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Captivating Sounds — Exclusively for Bass

Upgrade your bass effects game with the B2 Four Bass Multi-effects Processor from Zoom. Sweetwater musicians constantly laud Zoom Multi-effects processors for their incredible capabilities — now, there’s another excellent option for bassists. Zoom provides 104 stellar effects to build patches, including famous boutique effects, preamps, and Zoom originals. The Zoom B2 Four gets its power from Zoom’s Multi-layer IR technology plus six iconic DI models. A fantastic practice and performance tool, the B2 Four features a 60-second built-in looper and 68 beats from an onboard rhythm machine. You can carve out the perfect effects and emulations for metal, craft the perfect atmosphere for an upright bass piezo pickup, and everything vintage and modern in between.

104 effects and 250 presets onboard

With a range of 104 effects, there’s much to explore with the Zoom B2 Four. Users can mix and match up to five effects and amps simultaneously to craft a unique sound all their own. For instance, you can get synthy with Zoom’s Bass Standard Synth for unique filtering detail or engage the Bass Synth Talk that sounds like a talking modulator. A Bass Analog Octave effect harnesses the power of an algorithm formulated on operating principles of analog octavers. Dive right in, there’s much more to discover.

A preamp for every bassist

You can enjoy plenty of preamp models to contour your sound. A Clear Drive utilizes a linear phase filter in the distortion path to create a clear drive devoid of phase interference in the dry mix. A Super Low Preamp sounds excellent on super low sound thanks to “missing fundamental” acoustic science, a bass enhancer, and a negative one-octave sound. Next, a 1073 Preamp boasts a thick, warm, vintage sound. A Solid Preamp takes cues from a console’s solid-state mic preamp, providing you with tight harmonics and no ultra-low frequencies. And that’s only scratching the surface.

Zoom makes it easy to sound amazing

Zoom’s B2 Four packs multitudes of tonal value into a single chassis. With plenty of effects and emulations onboard, you can also start right out of the gate with 250 presets that run the gamut from classic ’50s sounds to contemporary sounds. Great for live performance, the B2 Four can connect you directly to one of the six DI models when you plug into the house PA. These DIs that re-create world-class direct boxes are now acccessible at the tip of your foot.

A wealth of connections

Zoom ensured the B2 Four came with all the connections today’s modern bassists require. You can connect the balanced output directly to a PA or interface or run through the stereo outputs to your favorite amp. Plus, an instrument input features a switch that can change the impedance. Go from 1M to 10M ohms to achieve plenty of clarity for basses with piezo pickups and more. USB connectivity means you can easily connect to a computer or smartphone and use your B2 Four Processor as a 2-in/2-out audio interface. Users can also purchase a separately available iOS app called the Handy Guitar Lap to expand the B2 Four’s capabilities further. Lastly, four rotary encoders and cross-key navigation buttons allow for easy control of parameters, output settings, and basic pedal controls.

Get inspired with 68 built-in drum patterns and a 60-second looper

Metronomes are great for keeping time, but they’re not very inspiring. That’s why the Zoom B2 Four includes 68 built-in drum patterns. These great-sounding rhythms give you plenty to jam along to, boasting multiple time signatures — 4/4, 3/4, and more. These built-in drum patterns are perfect for keeping the beat but don’t do much for harmonic context. That’s where the 60-second built-in looper comes in handy. You can lay down a chord progression, loop it, then play over it. This powerful looper is the perfect solution for more creative and engaging practice sessions!

Zoom B2 Four Bass Multi-effects Processor Features:

  • Complete with 104 effects and 250 presets just for the bass guitar
  • Powered with Zoom’s Multi-layer IR technology and 6 iconic DI models
  • Great for modern styles to vintage tones and everything in between
  • Mix and match up to 5 effects and amps simultaneously
  • Balanced output and stereo outputs for connecting to PA systems, interfaces, or amps
  • Great choice for live performance or private practice
  • 60-second looper is an ideal tool for jams and rehearsals
  • 68 built-in drum patterns in multiple time signatures give you plenty to jam along to
  • USB connectivity so you can use the B2 Four as a 2-in/2-out audio interface and connect to a computer or smartphone

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Tech Specs

  • Pedal Type: Bass Multi-FX, Modeling
  • Analog/Digital: Digital
  • Number of Effects: 104 (up to 5 simultaneous), 68 Built-in rhythm patterns
  • Effects Types: Octaver, bass synth, DI emulation
  • Amp Modeling: Yes
  • Inputs: 1 x 1/4" (instrument)
  • Outputs: 2 x 1/4", 1 x XLR
  • Headphones: 1 x 1/8" TRS
  • USB: 1 x Type C
  • Other I/O: 1 x 1/4" (control, expression)
  • Software: Zoom Handy Guitar Lab
  • Power Source: 9V DC 500mA power supply (included), USB Bus Powered
  • Height: 2.83"
  • Width: 9.8"
  • Depth: 5.59"
  • Weight: 1.99 lbs.
  • Manufacturer Part Number: ZB2FOUR

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Customer Reviews

4.1 out of 5

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Love it! Sounds amazing!

This pedalboard sounds incredible, I had previously bought the Boss GT-1B pedalboard but I honestly didn't like the sound and I had to sell it, and I bought this zoom b2 four, it was the best decision, this pedalboard sounds incredible and very easy to understand the functions, I can connect it to my iPad or laptop and use the functions, I already used it on stage and it sounds incredible playing live with the Band, I actually highly recommend this bass pedal board, you will not be disappointed!
by JC from Houston Texas on
Music background: 5 years

Impressed me!

I purchased a Digitech bp200 over 20 years ago and I can remember selling it just days later due to it sounding too cheesy and having no real practicality for a live application. After selling that multi effects unit I thought I would never purchase another one again. Took a chance on this Zoom B2 four unit and it has really impressed me with the sound quality, build quality, size, I/O placement and price. I purchased this unit solely for the effects, pre-amps, and drives (RC Drive) is definitely a hidden gem. I don't use any of the amp/cabinet modeling, as I prefer the tone and sound out of my Fender Rumble 500, but the IR 3 technology Zoom put in simulating the amps and cabinets is quite brilliant. I do agree with the previous reviewer on the screen being a bit overcrowded but as a 41 year old I didn't find it difficult to navigate through the menus and start adding my own patches. I highly recommend the B2 four to any bass players looking for inspiration or to expand their sound on stage!
by Mike Bain from Sour Lake, Texas on
Music background: 25+ years Bass player

Great for early on.

I wanted to get started with a pedal board. I watched all kinds of YouTube videos and blog posts about which pedals to get first and what pedals EVERY BASS PLAYER NEEDS to the point that I had overloaded myself with information and wound up just buying a tuning pedal and later a compressor pedal.

Then I saw the announcement video for the Zoom B2 Four. I figured "hey, if I can't get every pedal there is, I can at least get a simulation for every pedal type there is." The day it came in stock at Sweetwater it was ordered and on the way to my house.

When it finally showed up, I was completely overwhelmed by it. The documentation was extensive, the factory presets were vastly numerous and I still found myself not really knowing where to start.

Eventually, after connecting the iOS app to it, I was able start getting a better idea of how it's put together. I eventually found a few presets where I really liked the sound and, with the app, moved them to the beginning of the list for easier access.

And I was happy.

Then, I was having some sound issues with one of my basses. Be it the bass itself or the location of the speaker or Tzeench toying with my destiny, whatever the root cause I eventually created my own presets for each of my guitars to correct the issue while making each one sound as good as I can make it sound on my setup in my space.

No more fiddling with knobs each time I swap between my Fender and Spector. Just a click of the button and everything is optimized.

So my thoughts after a year with the device...

Pros:
- Lots of simulated pedals to play with. Saves a bunch of money, especially when you're as indecisive as I am.
- Not just pedals but amps as well. Want a vintage Ampeg? Just add it to your chain.
- Looks nice. Simulated carbon fiber. I love carbon fiber to an almost unhealthy degree.
- Once you get the hang of it, it's very easy to create new pedal effect chains on the fly.
- Built in looper. Loads of fun there.
- The bypass switch is great for when I need to tweak the raw sound coming out of the bass or when I want to just use the dedicated compressor pedal.
- The sounds are good. The pedal sims work exactly like you'd expect them to work and they sound fantastic.

Cons:
- If your pedal chain has more than three options and you will be activating and deactivating various pedals throughout the performance, I can see it being a pain. Easier to swap between presets than to activate and deactivate stuff. Haven't really run into that myself but as I've been messing around it's been on my mind.
- The built in tuner is ok but the screen doesn't feel responsive enough for me. I much prefer my Polytune for that side of things.
- It needs to be powered on for bypass to work. Otherwise it's a brick wall in your audio signal.
- The app needs to be directly plugged in to manage it. Would be nice to be able to manage disconnected then just sync the settings. Nitpicky but it still annoys me to the point that this is my biggest gripe about it.
- The power inlet is heavily recessed. Wasn't able to use the right angle power cable to connect it to my power supply. Again, nitpick but aesthetics are important to me.
- Some of the presets that are obviously trying to recreate certain sounds are…wishful thinking at best. For example: the "GoodTimes1979" preset sounds less like Chic and more like "booming muddy mess".
- The companion app is another $0.99 after paying $250 for the pedal and that bugs me a bit on principle.
- The compressors are...odd. I debated mentioning it because I can't really articulate what I don't like about them. I'm just not fond of them.

Final thoughts: I don't see myself going beyond bedroom bass player hobbyist. As such, this multi-effect pedal is perfect for me. Doesn't take up much space and allows me to instantly try new sounds and tones without having to fork over any more cash. Even if I wound up playing some small shows, this pedal would work just fine. Heck, I could see it working with with some medium sized performances as well if I ever decide to give that a shot. At some point you'll probably want to replace it with your favorite individual pedals if you are going actual pro performing as this is more of an "eggs in one basket" thing that could bite you at some point.
by Mr. Crispy from Jacksonville, FL on
Music background: Hobbyist

Great pedal

I've been using the B2 four for several months. It's a great DI box plus effects. It's so effective I don't use an amp anymore. It's very user friendly I've made my own presets this is worth every penny. Trust me you'll be glad you got it I've used another multi pedal from another competing brand It's not even close to competing with the b2 four. I'm a professional player I've used it for recording live demos it's quiet and powerful.
by Chris on
Music background: Bass player 30 years

Small, simple, great sound, and well designed!

I had been using my Line 6 Helix as my bass rig either direct to house or run through my QSC 10.2. It's an awesome bass rig but I'm a pretty simple man when it comes to bass and I didn't need that many options and I also wanted to see if I could find something smaller.

First I tried the Tech 21 Bass Fly Rig. I just didn't click with it. I had looked at the new Zoom B3n but it didn't have an XLR out which was a deal breaker for me. Then a friend and bandmate said she had the Zoom B3 and loved it. It's the older, now discontinued version and in my opinion (and others I've read) superior to the newer B3n, and it has an XLR. I was looking at used B3s when I decided to search "bass multi-fx" here on Sweetwater and see if anything else looked promising. The Zoom B6 looked great but again, way more than I needed. Then I stumbled upon the B2 Four. PERFECT.

Small, simple, yet still LOTS of options, and it had an XLR out. I was also very impressed by the design in that the navigational buttons are on a raised corner meaning you can use them fairly easily with your foot too. Looks sleek. You can "only" have 5 FX at a time (that includes amp sims) but that's plenty enough for me.

Today I went through all 250 presets and was very impressed. They sounded great and spanned lots of sounds and genres and most were very usable. It's fairly intuitive and if I have one complaint it's that the manual is pretty sparse and basic but has all the information you absolutely need. My first impression is that there are tons of great emulations and a huge variety of ways to run it. I'd be surprised if you couldn't find many sounds you like and cover anything you would want.

There's many varieties of all the different kinds of FX, plus a great selection of preamps, amp/cab emulations, and a dedicated switch that steps through 6 different modeled DI boxes, 3 tube varieties and 3 SS versions. Or you can just turn it off, which I do since I run amp/cab sims so it seems weird to put a modeled DI after an amp/cab sim.

I also wasn't exactly sure how the preamp models should be used. It seemed strange to me to put a preamp in front of an amp/cab sim, but some of the presets definitely did that, and I mean there's really no "rules." If it sounds good, it sounds good. I might just be too mired in old analog thinking of "Bass into amp/cab." I mean who knows, maybe a preamp into an amp/cab and running one of the DI models might produce something cool. I haven't tried yet. The presets also serve as a great way to learn the unit by analyzing them and seeing what's running verses what you're hearing. I remember one preset that was running the pitch shifter module but not actually doing any pitch shifting, but the unit itself definitely drastically changed the tone just being on. Another one used that same unit with a pitch shift of 1 cent to get a pretty good "With A Little Help From My Friends" sound. I never would have thought to use it in those ways.

I'm very happy with it and can't wait to give it full run at next week's gigs where I'll probably run XLR straight to front of house. I have a simple patch set up with a noise suppressor, compressor, drive, and chorus, into an amp/cab, and I can use the 3 footswitches to toggle the compressor, drive, and chorus on/off. Your mileage and needs may vary but this unit was EXACTLY what I was looking for.
by Heath Allyn from Austin, TX on
See also: Bass Effects, Zoom, Zoom Bass Guitar Pedals & Effects
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