STS-21
by HG Fortune
4.3 / 5     (13 votes)
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Win32
   
VST
STS-21 features the eXTended Wave-Transition method plus X-Torsion for absolute unique atmospheres, soundscapes, pads & textures.

A very straight user interface with 3 “Lazy”-Buttons for randomizing different sets of parameters so programming this synthesizer is incredibly easy. The Transition method adds a stunning new dimension and motion for an evolving sound changing completely it’s characteristics.
  • 4 digital PCM-wave oscillators powered by 256 selectable waveforms.
  • Loads Soundfonts & wavefiles (up to24 Bit).
  • X-Torsion function for oscillators.
  • 2 Transit(ion)-modes.
  • 2 resonant filters (24db Lowpass and 12 db Highpass).
  • 3 ADSR-style envelope generators.
  • 2 LFO (bpm-synced).
  • 1 LFO with shapeable and even patternlike waveforms (bpm-synced).
  • 1 Sample & Hold (bpm-synced).
  • 1 LFO (bpm-synced) for alternate Transition mode.
  • Stereo delay.
  • Stereo Reverb.
  • Internal Patch select, Patch (re-)name & Manage.
Downloads
Arnold Oct 03 2022
(5 / 5)
Oct 03 2022
What a master and talented guy HG.
Lizard Boy Jul 15 2022
(5 / 5)
Jul 15 2022
I was actually ready to give this free plugin 4 stars because some of the samples are out of pitch, or eventually drift off key. Then I thought that that was probably how HG Fortune created them in the first place - to be used alone and not alongside another sound where the tuning differences are noticeable. But because the sounds in STS-21 are so innovative and richly textured, they're mostly usable right out of the box. A little tweaking with a good tuner wouldn't hurt, either.
Coka Bizarro Feb 16 2026
Feb 16 2026
That's true. It's a good thing that you can tune each of the oscillators in half tones. It takes time when dialing in new presets but I just keep a tuner plugin on the same Mixer channel where I play STS-21 and tune it accordingly because for me it's worth it a hundred times! I couldn't find something by another plugin developer that does the same or comes close to this (and the other STS versions). Maybe aside from the Art Pyrite by ArtVera but she took also part in doing the Artwork and some of the presets of the STS-21 so that's that.
DSPplug Jan 12 2021
(5 / 5)
Jan 12 2021
Seems worth downloading, nice to have something that uses little resources that I can use for pads.
szopen Apr 15 2020
(5 / 5)
Apr 15 2020
Awesome possibilites, 4 sound sources makes job
That Guy Jul 28 2017
(5 / 5)
Jul 28 2017
Deserves 5/5, easy to use and sounds great.
MARCOS May 15 2015
May 15 2015
FANTASTICO ESTOU FAZENDO MANUAL.
Arquitecto Sept 17 2014
(4 / 5)
Sept 17 2014
Cool...!!!
Noize Boyz Jul 29 2012
(5 / 5)
Jul 29 2012
Wow, this amazing pad synth is free... This sounds so great and is easy to get into. A classic!
Super Fata Jan 17 2012
(5 / 5)
Jan 17 2012
This can create really lovely ear candy pads. It is very easy to get sweet sounds with the waveforms on offer! I use this quite regularly and actually prefer it over later versions for its purity and simplicity. Recommended!