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4Front Bass Module

Sound Module Plugin by 4Front Technologies
4Front Bass Module
4Front Bass Module by 4Front Technologies is a Virtual Instrument Audio Plugin for macOS and Windows. It functions as a VST Plugin and an Audio Units Plugin.
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4Front Bass Module is a FREE load & play VSTi software bass synthesizer that "generates a high quality bass sound".

With the proprietary 4Front hybrid synthesis technology, 4Front modules take generally smaller space than the sampled versions of the same quality, and the CPU usage is optimal.

Latest User Reviews

Average user rating of 3.22 from 9 reviews

Reviewed By Igrewsome
September 22, 2014

This is my go-to Bass guitar VSTi. Absolutely one of my favorites. I've got a few others I've used, but this one coupled with the BassGrinder amp... MAN.

Yes, it's got the classic Fender P-Bass sound. it just needs coupling with the right bass amp mod to get the right tone for your needs. You could porbably do the "Another Brick in the wall" bass tone with very little tweaking on whatever bass amp mod you prefer.

As I've mentioned in other reviews, so that you all know where I'm coming from, I'm a metal guitar player, and like just about everyone else here, I'm self taught in keyboards.

I tried using the pre-recorded samples, and wasn't happy with those. So I downloaded about six different bass VSTi's, and I've used this one the most. very little CPU usage, decent sound right off the bat. I tend you like growly basses, like Gibsons (I used to have a G3 and a Grabber... never did get that Thunderbird, alas!)

I'd say that on probably 70% of my album, this was the bass I turned to right away. The others... well, I'll probably be redoing those with this VST.

It's free, low CPU, sounds great, easy to mix and match to whatever sound you need... To me, it's a no-brainer.

Now, if you're a knob tweaker, it's gonna frustrate you. There's nothing to tweak. but whatever Bass amp mod you use, hey, tweak to your heart's content.

I'm usually writing my MIDI with one instance of it, then I duplicate the track once it's done in Reaper. I'll pan them equally (between 8% and 12% to give separation from the drums). It helps to think like a bass player... octave pops are something bass players are fond of, so if you're doing a phrase twice, do one rep in an upper octave and one in a lower. But that's getting more into the territory of a tutorial, and not a review.

You can listen to it here! The Fifth Seal features my imitation of a Gibson bass...


A little louder in the mix on this one.


Read Review

Reviewed By Jafo
October 2, 2005

This is a nice little gem which seems to find its way into just about all of my recordings (except when a Rhodes ir synth bass fit better, or when I record a live bass, of course). It has a nice, simple, basic sound which fits well into a mix and can be processed in many ways; I recommend the C3 multiband compressor. It works best as a supporting player, holding down the bottom end while other parts shine. Its expressivity is limited, but that can be offset by sensitive use of envelope followers, distortion, and the like. It also works reasonably well in the midrange as a rhythmic keyboard sort of sound.

Don't get me wrong; you won't want to fire your bass player. But you will probably find yourself using this in demos, home recordings, and maybe even the occasional professional piece. It sounds good, it's totally reliable, it uses very few resources, and it's free -- what's not to like?

Notes on my ratings --

User Interface: None to speak of, but none needed.

Sound: Great in a mix, so-so solo. Warm and a touch edgy.

Features: Works as a weird synth on top, if processed. But it's a one-trick pony.

Documentation: None needed!

Presets: None possible (which is kind of the whole problem...)

Customer Support: None needed!

Value for Money: Totally worth the download.

Stability: ExcellentRead Review

Reviewed By Tea
April 22, 2005

I first acquired this when I was starting out, having bought Cubasis and suddenly realised that I needed a whole load of extra instruments to make tracks with. I downloaded this because it was free, and I'm really glad I did.

* The GUI is immaterial, as there are no knobs and buttons. As it is, its simple and elegant.

** 4Front bass is a mixture of sampled and modelled sounds, and the notes effectively play pretty much evenly across the whole of your keyboard. They're a just a bit thin at the 'top of the neck', but even expensive samples are too, I've found. Overall the sound is good and fat, with a warm, slightly rubbery quality. There is some string excitation (also curiously rubbery), that sounds like someone administering a Chinese burn with washing-up gloves on.

I used it a lot for a while, then went to actual samples played through Kontakt, but I keep coming back to this from time to time, as it has a lot of qualities to it that make it both practical and enjoyable.

*** It sounds alot like a bass guitar!

**** You'd only need docs for this if you'd never recorded music on a computer before.

***** Just the one preset.

****** Customer support is, by all accounts, pretty good, though you won't need it on this.

******* Given that its free, it can't fail to be value for money, but even if it wasn't it would still be worth paying for.

******** Very low cpu load and absolutely no stability problems for me in two years of use!

.Read Review

Reviewed By TotcProductions
February 3, 2005

User Interface: Nice, slick, and simple. Easy on the eyes. It manages to beautifully represent the "barebones" approach of the vsti while still keeping a stylish look about it.

Sound: Personally, I love the sound of this bass. It's definitely got it's own character. While it only claims to be a simple bass guitar to throw into your tracks, it's got a very heavy, solid sound on the low end that fits perfectly into my occasional jazz piece. At the same time, It's perfect for Rock pieces as it faithfully reproduces the sound of an electric bass guitar being picked heavily. The only problem I really have with it's sound in general is that the sonic qualities of the higher notes aren't as attractive as the lower end when sustained, but for a quick pop up the neck and back down again they sound pretty good.

Features: N/A

Documentation: N/A

Presets: N/A

Customer Support: George at 4front has got to be one of the most friendly and approachable dev's out there today. He always responds to my emails promptly and writes more than a quick yes or no. Very down to earth kind of guy while maintaining a strike of genius. He even lent me 100 MB's of FTP space for a while until I got my own site up and running!

Value For Money: Considering all this vsti cost me was a couple seconds of broadband downloading, It's fantastic! Does exactly what it claims to do and I've found it showing up in my tracks over and over again.

Stability: 150% stable on my system. Like I said, I use it all the time, whether in recording or just drafting a bassline and it's NEVER given me a problem. Low CPU and no crashes.

Overall, I love this product. It's fast, simple, and free. It has a permanent spot on my harddrive.Read Review

Reviewed By PaintedBlue
October 8, 2003

4Front Bass Module is a useful VSTi plug-in for musicians who are in need of a lightweight, low-CPU rock bass guitar sound.

User Interface: N/A

Sound: Sounds like a rock bass guitar. It has minimal variations for velocity response, and the higher velocities have a little bit of high-end static or amp noise. The velocity response is set a bit too high for my playing style, so it is hard to trigger them from my MIDI Controller without using a MIDI dynamics processor. The sustain and release sound a bit unusual if you hold a note too long.

Features: Obviously, this free version is only a representation of what the professional version would offer, but with no user controls and only one sound, it is difficult to predict what features such a version would have.

Documentation: N/A

Presets: N/A

Customer Support: The 4Front website seems to be very customer-focused, and George (the lead developer) posts here often. I believe that he has set up a listserv for his users as well.

Value For Money: It is free and might be useful to users looking for a simple VSTi that does not consume much CPU. As an owner of Spectrasonics Trilogy, however, I would recommend investing in that product over this one based upon the free version of 4Front Bass Module, as Trilogy pretty much covers all of my virtual bass needs in a single plug-in.

Stability: Excellent, but with no controls, I would expect it to be fairly solid.

Overall, 4Front Bass Module is a nice addition to the free VSTi community that some might really appreciate.Read Review

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Comments & Discussion for 4Front Technologies 4Front Bass Module

Discussion: Active
22 July 2014 at 4:25am

how do i download these plugins please.

22 July 2014 at 3:51pm

At the top of the present page, you see the image of the bass guitar?

At the right of the image of the bass guitar, you see a link called "Product". I drives you directly to the webpage of the product (it works the same way for about 95% of the products presents in KVR).

And for this bass guitar, at the top left of the webpage you'll immediately find the download links.

If you want to see all his other products (you're right, they are very simple but they sound very good!) at the top of his webpage you have a menu in blue characters, with "Software" among the commands of the menu. You can browse among his softwares by this way. Some are payware but many are freeware. They all have a very good sound, very few tweakable but very good as they are. George Yohng is an excellent developer in physically modelled synthesis. By the way you could take a look at his articles too...

7 August 2015 at 12:44am

FYI, this IS available in 64-bit.

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