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🎸 Elevate your bass game with endless effects and unstoppable power!
The Zoom B1 Four Bass Multi-Effects Processor packs over 70 effects, 9 amp models, a 30-second looper, and 68 drum patterns into a compact, battery-powered pedal. Designed for bassists of all levels, it offers professional sound shaping with easy-to-use controls and seamless software integration for continuous sound expansion.










| Amperage | 9 A |
| Asin | B07MZPV951 |
| Audio Output Effects | Auxiliary |
| Best Sellers Rank | #4,936 in Musical Instruments (See Top 100 in Musical Instruments) #12 in Electric Guitar Floor Multieffects |
| Brand Name | Zoom |
| Color | Black, Red |
| Connector Type | USB |
| Controls Type | Knob |
| Customer Reviews | 4.6 4.6 out of 5 stars (741) 4.6 out of 5 stars |
| Global Trade Identification Number | 00884354020606 |
| Hardware Interface | USB |
| Included Components | Software |
| Item Dimensions | 6.2 x 5 x 1.7 inches |
| Item Dimensions L X W X H | 5"L x 1.7"W x 6.2"H |
| Item Type Name | Bass Multi-Effects Pedal |
| Item Weight | 16 ounces |
| Manufacturer | Zoom |
| Manufacturer Part Number | B1 FOUR |
| Model Name | B1 FOUR |
| Model Number | B1 FOUR |
| Number Of Items | 1 |
| Power Source | Battery Powered |
| Set Name | 60+ Effects |
| Signal Format | Analog |
| Style | B1 FOUR |
| Unit Count | 1 Count |
| Upc | 884354020606 |
| Voltage | 9 volts |
| Warranty Description | 1 year - replacement. |
User
Great Little Machine!
Whoa, if you want some superior bang for your FX pedal bucks, this Zoom B1-4 is the deal of the century!I'm NOT exaggerating. This little jewel is undoubtedly the BEST bass effects pedal I've ever owned or played with. It has everything you'll need, including amp modelling, outstanding compression--the "Glam Comp" setting delivers jaw-dropping sustain, the likes of which I've NEVER heard before--an auto-wah that is a blast to play with, all sorts of nifty filter variations, and even some classic amp tone models right out of the history books. When I first plugged it in and started messing with it, I was astonished by this unit's range and versatility. I could get nearly any tone or amp sound, any kind of filter effect I wanted. It's ridiculously simple to use and has an open, "blank" bank in it that allows you to copy an effect from a different bank into an open slot. It's stupid-easy to set up a series of presets in linear order in the blank bank so that just a touch of your toe cycles quickly to the effect you want. I set mine up with the auto-wah first, then the "hard comp," followed by the "glam comp," with an Ampeg SVT amp model, then a vintage Fender cabinet, leaving four more slots open if I want to add something else, simply by copying the desired patch--a three click operation--into any of the remaining slots. Make a mistake? Easy-peasy: delete it and do it again. Takes less than a minute to reprogram it.Not satisfied with the internal patches? No prob; the unit lets you tweak the parameters to suit your own ears. I didn't get into that; I really liked what I heard. Zoom's engineers really put some serious thought and research into this.There are only two drawbacks: it's made of a relatively lightweight plastic, not aluminum or steel, so it's a wee bit fragile. DON'T drop it! I suggest buying the carrier case that's available. I'm glad I did. It's a hardshell case and protects the unit really well.The other drawback is that some of the patches are a bit...well, WEIRD. One of them is labelled "Explosion." I tried it. Yes, it sounds like someone set off a nuke in the next county. Or a really mean thunderstorm. I dunno, you metal players might find a use for it--but a few oddball patches that I'll never use does not mean a deal-breaker.The price will make your jaw drop, too: around $90. (Zoom might increase the price later. I'm astounded that it's THIS inexpensive.) Shipping will add a bit more and if you get the case, you're looking at a total of around $125 for both. Yes, it comes with a wall-wart that has a nice long cord. All told, the Zoom B1-4 is about HALF the price of a comparable steel or aluminum sheathed unit from any other manufacturer--and it does five times the job. It's clean and quiet enough for recording. Onstage, it sounds frickin' AWESOME. I kick the glam comp on when I hit a low E at the end of a tune and that note will sustain for several minutes. I do NOT exaggerate!No foolin', this is the deal of the century. It's now the ONLY pedal I use onstage for my bass (a Squire Affinity series J-bass with active electronics which is itself an awesome machine.) and I can't see myself using anything else for some time to come. Warning: it will peg the meters on the sound board if you don't give the engineer a heads-up during the sound check. I'm serious. This little beast is POWERFUL.
User
C-c-combo!
What a great little pedal. In a small package, it combines a lot of features: a drum machine, tuner, looper, and very nice selection of effects, amps sims, and miced cab sims. Something I like very much about this pedal - is usability. Which such a huge number of options and features it is easy to make such devices too complicated to use. Not is a case of Zoom B1 Four - the user interface is surprisingly logical, simple and easy-to-use. There are no confusing deep menus, clicking trough endless lists, etc. Everything is just one or two presses away, with options easy to find and understand. Special kudos for a dedicated physical knob controls, which map directly to effects params, eliminating needs to scroll through options just to tweak few params.Another great feature (added in 2.0 software update) is an ability to switch looper between pre-effect and post-effect (previously it was post-only). This allows you to record some riff, put your bass aside, and tweak the sound until you get the desired result having an exact same sound to test it on. Amazingly handly!Battery power and headphones output mean it is an ultimate headphones practice device with a plus of being very portable. All you need it G1 Four, headphones, and bass. You just dial in your favorite amp and cabinet sound, and you get a great bass sound even in headphones.Physically it also looks very tough and sturdy and feels like a quality device, not a plastic toy.10/10, Amazing product from Zoom
User
Great for practice and experimenting, wouldn't use it in a pro setting.
Cons:1) No bypass. At all. Best you can do is try to dial in a "Clean" patch to switch to (unless you have a separate line selector pedal).2) Noisy when powered unless you use Zoom brand power cord, $20 sold separately, or AA batteries (which it eats up pretty quick). I haven't tried the USB option.3) The sound quality is not good enough for serious live or recording applications, IMO. I found the chorus, octave, and synths surprisingly decent, but everything else was pretty meh and all of the drive/fuzz/distortion stuff painfully bad. I didn't expect much for $99, so it's not heartbreaking.Pros:1) Number of features and sounds. I didn't know which pedal to get next, so I got this to see which effects I enjoyed most. It lets me try just about any combination of effects and how I might incorporate them before I throw down $$$ on a quality single pedal.2) Convenient for rehearsal. I didn't intend to use it for this, but I have very much enjoyed it as a portable practice tool. The drum tracks, battery power, and headphone out make it easy to use.3) Computer interface. Sure, it's not a recording interface, but using the software to manage patches is very helpful and beats menu diving on the pedal every time you want to tweak one of the infinite parameters.I feel like I got my money's worth. It's been a lot of fun. I wouldn't take it to a gig, but I use it almost every day to practice and try out different sounds. I hope this helps you make your decision.
User
Pretty great for what it is...
I bought this because it was cheaper than a single analog pedal that isn't crap. It has a lot of preset effects, which are combinations of the emulated pedals/amps. Out of all of them, though, there are less than 10 (more like 5) that I actually use. Wait though, that's not a negative. For what I listen to and play, those few are enough. I get a compressor, a delay pedal, a synth pedal, chorus, fuzz and distortion for maybe 2/3 the price of any of those analog pedals, and the effects sound good enough to me. I'm a noob, dunno if I would use this in a gig, because... I don't play gigs. Put the hard comp on my Fender J-bass playing Crazy Little Thing Called Love, and suddenly, I AM John Deacon (not really, but it sure feels that way). This thing is absolutely great. I don't need the Wah, or the Synth, or most of the other stuff, but even using a very small subset of the preset effects (and only having started playing with making my own virtual pedal boards/effects), this device is worth every penny I spent. Maybe I should have gotten the one with the physical pedal, but I'm not that good... I certainly don't miss it. EVERYONE should have this effects pedal in their home music room, and toss it in the gig bag to amaze your friends. I LOVE IT! And if I ever "git gud" and can tell the difference between digital and analog effects, this has shown me which pedals I'm going to be looking at.
User
I like this thing!
It has plenty of effects that I doubt I will use them all. I am not sure I will use the "Explosion" effect since the keyboard people can replicate all kind of explosions more... effectively.This thing makes my affordable Yamaha TRBX-174 sounds a lot better. I wanted a TRBX-600 series but I may not need one since this Yamaha - Zoom combination already sounds pleasantly good.I can output the signal from this Zoom to a mixer, an amp, or a pair of ear/headphones with TRS jack. My preferable setup is through a Yamaha AG-06 to my computer, with monitor headphones or active monitor speakers, or both.It can be powered using a USB power brick which I already gathered a bunch over the years. I can also modify the effects or even register new ones in the available slots using a computer via this micro USB port which makes this thing even more powerful. It should be powered by the computer USB in this scenario.My most favorite feature is the tuner. It works very fast and accurately. I have a pedal Monoprice and a clip-on Snark, too. This one is much faster and seems more accurate.I don't use the looper and am ok with the plastic body. The build is solid but I am not sure how much "stomping" it can take from a more vivid bassist.Since this thing can be powered either by a USB brick or batteries, it is mobile. This means you can play it with ear/headphones anywhere.It also takes aux in, meaning you can jam along songs from your phone, iPod, whatever that can output through a 3.5 stereo jack. I have not tried it but will do soon. Eh, those of you who have new phones may be out of luck. My phone has no good old 3.5 jack. I will try a Bluetooth adapter (I already have one laying around) which costs around $20, or hopefully less, here on Amazon. So, you can play some bass with this thing while one the train or bus, too!I rarely rate a product five stars except the thing is truly exceptional. This thing earned a solid 5. Recommended. It is under a 100 dollars now, so buy it as soon as you can.
User
Mostly good effects, great value
Most of the effects aren't as high quality as dedicated analog pedals, but they're usable, at least to my ears. Frankly, in a band setting I can't tell much difference between these effects and the those costing much more. The pedal is fairly easy to set up, but is extremely easy to edit via USB connection using the GuitarLab software that can be downloaded from Zoom website. I mostly don't use effects when playing with bands but this Zoom is fine for the occasional time when I want to add something different, or the song requires it. I'm not concerned about the plastic housing and controls since the unit seems well built and I take great care of my gear, so durability shouldn't become an issue.
User
Great pedal
As a “bedroom bassist” this pedal does everything I need it to. I can play quietly when I need to and it sounds good through my amp. The built in tuner is almost as accurate as my stroboscope tuner. There’s a decent selection of drum beats, and you can plug an audio source into it to play along with anything. The only minor flaw is the looper function is only 30 seconds, and you can’t re record an overdub. But overall very happy with this purchase
User
great for DI recording in a home studio
This unit has great sound quality, and loads of features for the money. I am a guitarist, but have an old Squire Affinity P-bass upgraded with brass saddles, a Tusq nut, wiring from Sigler Music (920D), Seymore Duncan SPB-2 (hot P-bass) pickups, and some good copper cavity shielding -- I didn't want to buy a dedicated mic and bass amp just to demo my stuff, and this ties it all together -- I really only wanted compression, and amp modeling (which this does well enough for me) but it also has a ton of the famous Zoom effects that might be useful -- they are fun to mess with at the very least. As a bonus, there's a looper and some beats that are good for spicing up practice.
User
Buena, bonita y barata!
Muy contento con mi pedalera.Tiene muchas ventajas:Es compacta y ligera (del tamaño de mi mano), funciona con pilas AA (incluidas), con conexión USB o por corriente (no incluye eliminador pero yo uso uno de 2da mano y no he tenido problemas).Tiene bastantes efectos y al conectarla al PC se descargan más.El sonido no es pro (obviamente) pero para ser una pedalera económica pues es muy aceptable.Además tiene integrado herramientas como afinador, looper de 30 segundos y caja de ritmos (con un volumen muy alto por cierto; no necesitas baterista jaja).Es fácil de configurar; en la página de Zoom puedes descargar los manuales en Español... eso sí, necesitas tiempo para probar y ajustar los efectos pero la verdad es muy sencillo y entretenido.En conclusión, pues me ahorré una buena lana en pedales individuales de momento. Ya cuando busque algo más profesional (y tenga dinero) pues doy el cambio.La recomiendo ampliamente.
User
Very useful
I am a beginner and it is very useful for me to listen/know all kinds of tones.It boost my eagerness to practice more.
User
Killer tool for beginner bassists
Learning the bass with online lessons, so I have to play along with the lesson videos, and practice by myself and try to self-judge. I tried 3 setups:- USB audio interface, bass plugged into it, Reaper DAW with bass amp VST models:- OK, but super cumbersome, can record myself but it's painful- Can use easy tuner in Reaper- Vox amPlug2 Bass with AUX IN to laptop:- Much less cumbersome, and can practice without laptop- Good beats to play along- Have to use separate tuner- Can't record myself easily- Zoom B1 Four with AUX IN to laptop- Lots of great-sounding amp models- Great beats for practice, lots of choice- Great built-in tuner without plug/unplug- ** BEST ** Can record myself play 4-16 bars!The Zoom B1 Four was the thing that totally changed the game for my learning. The ability to play along with lessons (with AUX IN) while having good bass tone with amp model is awesome. Once play-alongs are done, I just pick one of the rhythms (like one of the 8beats, Rock or Funk) and just use the looper to record myself. It's super easy and I can tell if I'm on beat and the notes are right.Overall, excellent value for money. The built-in effects/models are really easy to configure. The looper is simple to use and has count-in, and there's enough beats that I don't need a separate drum machine or anything. The tuner is the bonus cherry on top.Very highly recommended.
User
Boa
Boa pedaleira, tem ótimos efeitos
User
Good
Nice
Trustpilot
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