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Synth (Analogue / Subtractive) Plugin by Roazhon DSP
BrainStormer by Roazhon DSP is a Virtual Instrument Audio Plugin for Windows. It functions as a VST Plugin and a VST 3 Plugin.
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BrainStormer is a freeware virtual analog synthesizer.


  • 3 stereo oscillators with retrig, phase, wave stretch, stereo dephasing controls.
  • Flexible FM & ring modulation.
  • Filter (LP, BP, HP, Peak, Notch) with dedicated ENV, key follow.
  • 2 LFOs with large frequency range (up to 2kHz), retrig, BPM sync, phase, clipping, independent destination amount controls, self modulation.
  • 2 mod ENVs with ADSR, independent destination amount controls, self modulation.
  • 2 extra modulator sources (wheel, pitchbend, velocity, ENVs and LFOs).
  • 84 destinations for modulators.
  • Panic, main volume, polyphony, note mode, portamento, pitchbend controls.
  • Internal oversampling x2, 100% home-made DSP code.
  • VST3 and VST2.4 (32 and 64-bits versions).

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Comments & Discussion for Roazhon DSP BrainStormer

Discussion: Active
16 March 2014 at 9:09pm

A nice demo here by our friend Layzer :



2 February 2015 at 1:47pm

You should add it here:


  1. It's free for you and for all the KVR members.
  2. It's hosted by KVR itself (no need to use dropbox or any other hoster).
  3. It's eternal.
  4. It's the best way to have at the same place all the freeware presets made for a plugin.
Jazz Franco
Jazz Franco
23 April 2016 at 7:39pm

Quite a nice synth, but how on earth does one load its native presets (.bstp?)



24 April 2016 at 12:05am

All the presets are also provided in the common fxp format and vstpreset format, all are included in the zip file which contains the help. You can manage the load (and save) of the presets in fxp format with any DAW you want.

Unfortunataly Olivier, who was the genius developer of this synth, passed away in October 2015. It was a very sad news for all those who loved this project.

Rest In Peace, Olivier, you have left a wonderful print on Earth.

But the project is perhaps not vanished. There is a real good hope that it will be continued. Clément, a French friend of Olivier (in France we all are friends, much more that American people may think...) is trying to take in charge the continuation of the project. You can read the exchanges about that hope:


Jacques (French too)

Jazz Franco
Jazz Franco
24 April 2016 at 11:53am

Merci, Jacques.

I only learned that sad news later on, let this great synth stay on to commemirate the author.

3 November 2016 at 10:58am

A very good synth, definitevly. There are several archives here on KVR with some really nice presets, but some are only for the test version 0.89.

So I tried the 0.89test version (see http://roazhondsp.storm-mastering.com/test) with win7/32, on Minihost and Cantabile 2.0, and it was impossible to define the bank folder, it always said that the folder is empty and has no presets/banks etc. Then, after I aborted, it said, the patch manager is disabled for this instance, and asked again for the folder (!). After this second round it started, but seems a bit irritated when loading .fxp patches (only those are possble to load then, via the host). Note that 0.89 .fxp are not recognized in 0.87 (no message, but also no sound/param change). Manipulation of the .cfg in the roaming folder did not work, also several attempts with shorter names and paths for the banks folder led to no success. Also note that the vsti asks for the banks folder during first scan of a host (f.i. a DAW), if the path was not set before.

That doesn't diminish the synth's quality, but the 0.89test version defnitevly needs some bugfixing.

I would recommend, if it is possible, to use the u-he method for the banks folder path, a simple file shortcut pointing to it, located where the dll resides. Ths eliminates the need for a .cfg file in that nasty roaming path, which should be avoided for several reasons.

It is very sad that the creator of this great synth died. I suggest, since his work is not complete, to make it an open source project. I am sure, that the community will honor the quality of the creation and maintain it properly.

27 February 2017 at 12:46pm

I have never heard about a vsti that there is no way to load its own patches.

27 February 2017 at 5:48pm

There is.

Using the DAW.

Today ALL the DAWs have their own features to load and save the presets and banks of their installed plugins.

A built-in presets/banks loader/saver makes actually sense only when there are special functions in the preset browser (a search function, groups and sort functions, etc.). When there are not these functions, and it is very rare to have them in freeware plugins... why not use simply the presets/banks loader/saver of the DAW ?

I want to add an information if you don't know it: Our friend Olivier, developer of Brainstormer, passed away a year and half ago. And he was continuing to improve the synth when he died. So:

  1. Things we don't find in a product which unfortunately is suddenly aborted are not necessarily thing which were not planned.
  2. Things which can already be got by using the DAW are not the priority in the development of a plugin... and may even be avoided if the plugin is excellent as is for its main purpose (here a very good synthesizer) knowing that the missing feature is in fact rendered anyway by the DAW.
  3. Before complaining on free products we should always first consider the work made instead of the work we would have wished.
15 October 2018 at 7:21pm

It's a reasonable question to ask. There are a number of patches out there in .bstp format which have no .fxp or .fxb equivalents. If there is a way to load these patches from within the plugin (since you can't do it via the DAW), any information on how to do so would be greatly appreciated, not just by me, but by the community at large.

20 March 2020 at 7:17pm


peter dibella
peter dibella
15 October 2020 at 7:11pm


15 December 2020 at 10:44am

En copier coller ou glisser sur FL studio .

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