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Savvy Synth

Experimental Synthesizer Plugin by Saguaro.one
MyKVRFAVORITE10WANT22
Free or donate
Saguaro.one
Savvy Synth by Saguaro.one is a Virtual Instrument Audio Plugin and a Software Application for Windows. It functions as a VST Plugin, a VST 3 Plugin and a Standalone Application.
Product
Version
0.591
Microsoft Windows 7, 8 or 10 (might work on older systems)
4-core CPU @ 3.0 Ghz or higher, preferably later generation i5 or i7 @ 3.5 Ghz or higher

Microsoft Visual C++ Redistributable Package for Visual Studio 2022 found here:
64-bit
https://aka.ms/vs/17/release/vc_redist.x64.exe
32-bit
https://aka.ms/vs/17/release/vc_redist.x86.exe
Or here:
https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170
Instrument
Formats
Other
Stand-Alone Utility / Application
Copy Protection
None
Important Note
This is a personal project. Please visit www.saguaro.one for more information and details. Savvy Synth can have any number of flaws, some of which might be solved in the future. It is also at the mercy of any behaviour inherent to FlowStone itself.

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Simple Flowstone synth with a smile to take you back to the 90's... Just a fun personal project.

Savvy Synth uses mainly the saw waveform (hence the name "Savvy" synth and "Saguaro" as well) which it adds/subtracts/mixes with other basic waveforms in prewired schemes (selectable as Osc Modules, utilizing varying amount of oscillators).

Up to 64 voices depending on CPU, it features no analog emulation, no special unison, no effects like delay, chorus, reverb or any other FX processing. Only straightforward harsh digital-mono mayhem with some filtering. No secret internal workings except for FlowStone's excellent audio/dsp engine itself and a great deal of internal modules created or optimized by MV (see link below).

Savvy synth doesn't feature a regular oscillator section and only 3 main parameter knobs are exposed including a fundamental saw adjustment. This is intentional and very rompler-like yet without being a rompler.
Apart from this Savvy synth do however feature rudimentary modulation by 2 LFOs and 2 Envelopes. It also features an auxiliary (extra/sub) oscillator.

Savvy synth can be considered a barebone 1+1 oscillator synth of sorts. Osc Module + Aux Oscillator.
To understand the idea of the synth choose the default patch (INIT) and try the different Osc modules, tweaking P1, P2 and P3. Adjusting these parameters on an already made preset will likely not yield a satisfactory change, since they might be modulated already.

Big thanks to MV his contributions to the FlowStone community made this synth possible. MV deals in even more advanced audio/image processing than any of his modules that was repurposed for this particular synth. MVs website can be found here

Disclaimer
This is an experimental synth and as such it does have sound issues including clicks and some aliasing. I am by no means an audio/DSP-engineer. Saguaro.one is a pasttime dabble and there might be more Osc Modules. When and how many depends ultimately on any public interest for the plugin. Let me know if you find this plugin fun or useful in some way.


Version 0.591 Update July 2026:

  • Saguaro.one has been renamed to Savvy synth
    - Lots of smaller changes and fixes.
    - The full list of updates/changes/fixes for v0.591 can be found here: Update history
    Please note
    Replacing old version .DLL/.VST3 of Savvy synth for updated versions might not always work when loading an old DAW project. Depending on what has been changed in Savvy synth.
    Easiest is to add second instances of Savvy synth to you track(s) after replacing the .DLL/.VST3. Then start mirroring settings from the old instance of Savvy synth to the new. Saving current preset as .txt file from old instance and loading into new instance might also work.
Made with FlowStone

Latest User Reviews

Average user rating of 4.50 from 2 reviews
Savvy Synth

Reviewed By Warkyuu [all]
July 29th, 2024
Version reviewed: 0.524 on Windows

This is probably one of the coolest plugins I have discovered recently, and one of the best plugins I've seen created in flowstone. It is very versatile in the sounds it can create, and it features a playful and great looking UI.

The issue I had with it below has been fixed. Thank you dev, this synth is incredible :).

̶I̶t̶ ̶h̶o̶w̶e̶v̶e̶r̶ ̶h̶a̶s̶ ̶a̶ ̶v̶e̶r̶y̶ ̶u̶n̶f̶o̶r̶t̶u̶n̶a̶t̶e̶ ̶s̶i̶d̶e̶ ̶e̶f̶f̶e̶c̶t̶.̶ ̶E̶a̶c̶h̶ ̶t̶i̶m̶e̶ ̶t̶h̶e̶ ̶p̶l̶u̶g̶i̶n̶ ̶i̶s̶ ̶r̶e̶l̶o̶a̶d̶e̶d̶, ̶ ̶t̶h̶e̶ ̶w̶i̶n̶d̶o̶w̶ ̶w̶h̶e̶r̶e̶ ̶y̶o̶u̶ ̶c̶a̶n̶ ̶s̶e̶l̶e̶c̶t̶ ̶t̶h̶e̶ ̶p̶r̶e̶s̶e̶t̶s̶ ̶p̶o̶p̶s̶ ̶u̶p̶ ̶a̶n̶d̶ ̶t̶h̶e̶ ̶p̶l̶u̶g̶i̶n̶ ̶w̶i̶l̶l̶ ̶n̶o̶t̶ ̶l̶o̶a̶d̶ ̶u̶n̶t̶i̶l̶ ̶a̶ ̶p̶r̶e̶s̶e̶t̶ ̶i̶s̶ ̶s̶e̶l̶e̶c̶t̶e̶d̶.̶ ̶T̶h̶i̶s̶ ̶w̶i̶l̶l̶ ̶a̶l̶s̶o̶ ̶c̶a̶u̶s̶e̶ ̶t̶h̶e̶ ̶a̶u̶d̶i̶o̶ ̶t̶o̶ ̶f̶u̶l̶l̶y̶ ̶s̶t̶o̶p̶ ̶w̶o̶r̶k̶i̶n̶g̶ ̶u̶n̶t̶i̶l̶ ̶y̶o̶u̶ ̶p̶r̶e̶s̶s̶ ̶t̶h̶e̶ ̶p̶a̶n̶i̶c̶ ̶b̶u̶t̶t̶o̶n̶.̶ ̶I̶t̶ ̶w̶i̶l̶l̶ ̶d̶o̶ ̶t̶h̶i̶s̶ ̶f̶o̶r̶ ̶e̶v̶e̶r̶y̶ ̶i̶n̶s̶t̶a̶n̶c̶e̶ ̶o̶f̶ ̶t̶h̶e̶ ̶p̶l̶u̶g̶i̶n̶ ̶t̶h̶a̶t̶ ̶i̶s̶ ̶p̶r̶e̶s̶e̶n̶t̶ ̶i̶n̶ ̶t̶h̶e̶ ̶p̶r̶o̶j̶e̶c̶t̶, ̶ ̶s̶o̶ ̶s̶a̶v̶i̶n̶g̶ ̶a̶n̶d̶ ̶r̶e̶l̶o̶a̶d̶i̶n̶g̶ ̶p̶r̶o̶j̶e̶c̶t̶s̶ ̶u̶s̶i̶n̶g̶ ̶m̶u̶l̶t̶i̶p̶l̶e̶ ̶i̶n̶s̶t̶a̶n̶c̶e̶s̶ ̶o̶f̶ ̶t̶h̶i̶s̶ ̶s̶y̶n̶t̶h̶ ̶c̶a̶n̶ ̶b̶e̶c̶o̶m̶e̶ ̶v̶e̶r̶y̶ ̶t̶i̶m̶e̶ ̶c̶o̶n̶s̶u̶m̶i̶n̶g̶.̶

Response from Saguaro from Saguaro.one on July 29th, 2024

Thanks for feedback...
If you download the plugin again the issue you decribed has been fixed in a covert update.

Actual update will be uploaded soon, with some more fixes and added features.

Have fun.

Read Review
Savvy Synth

Reviewed By elviecho [all]
October 18th, 2022
Version reviewed: 1.0 on Windows

My first thought was: A Pokemon Synth?
Like the author wrote, it is not perfect, the possibilities are sparse and sometimes it sounds very harsh.
But I like it. I went thru the presets and found some surprisingly charming ones.
If you are in Lo-Fi and if your inner child is still alive...this thing can bring a smile on your face.

Read Review

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Comments & Discussion for Saguaro.one Savvy Synth

Discussion
Discussion: Active

THIS POST HAS BEEN REMOVED

Saguaro
Saguaro
4 December 2025 at 2:57pm

Feel free to leave comments about this plugin..:

  • What you like or hate the most about this plugin.
  • What works or does not.
  • If something "that falls within the realm" of the current concept of the synth is missing.

Just keep it simple since I'm not a studio-engineer, DSP- nor a math-guy
Have fun! And make some noise... or noises perhaps :-).

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