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Windows, outdated
GRM Tools Classic VST v1.6.52-H2O screenshot
Team H2O | 05-21-05 | 11,63 MB
GRM Tools Classic VST is a bundle of eight plug-ins that provide superb tools for sound enhancement and design. Conceived and realized by the Groupe de Recherches Musicales (Musical Research Group) of the National Audiovisual Institute, Paris, France, GRM Tools is the result of more than 20 years of research and development by composers and sound designers in sound transformation software. Use these plug-ins with Cubase or any other version of a PC program that is compatible with VST plug -ins.

The plug-ins are:


Comb Filters




Pitch Accum



NOT working correctly on Reaper 5.965 x64 (Bridge), the UI is quite laggy (it doesn't allow click and drag), but the the plugin per se works, beware of this problem.

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  Resident 5.12.2012 748 13638
Uploaded | Rockfile
  Contributor 2.11.2014 1541 7920
Uploaded | Rapidgator | Rockfile | Uploadboy | Katfile
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  Member 7.09.2015 36
an old classic capable of different results, thanks.
  Member 6.04.2018 84
i'll use these forever
  Resident 9.04.2013 302
what's the dirrence with this 1:
GRM Tools Classic Bundle VST v1.6-H2O
  Member 4.01.2019 1 6
quote by hagenThanks!
what's the dirrence with this 1:
GRM Tools Classic Bundle VST v1.6-H2O

It's an updated version, released a year later. I haven't tested the other release so I can't tell which is the best to use, but I noticed that I had a newer version, so I uploaded it.

There were also another one from RADiUM but I don't see it, it has been blocked?
  Resident 9.04.2013 302
thanks for info!
  Member 13.11.2013 131
I used them forever, but they became more and more unstable. But i've seen there are new versions here: .... iLoked

R2R to the rescue!!
  Resident 21.03.2018 143
These were absolutely awesome! I still use these on my old XP machine now!
Perhaps I've been looking in all the wrong places, but I have yet to come across any other plug-ins that offer similar effects and workflow/GUI. Would really appreciate suggestions if anyone has any?
(I'll keep dreaming about those updated ones...)
Huge Thanks to all hard working teams, suppliers, admin, mods & members for their work, efforts & input!
Patience, respect, gratitude & appreciation... always ;)
  Resident 26.11.2015 653
don't leave home without these plugins!! and i feel lucky to have been able to purchase the complete ii v3 bundle for $270 a few years ago during a crazy black friday sale(i've never seen them that cheap before or since!). but sadly the ilok license is only for one pc.. GRM so strict!

so i was able to jbridge these old H20 versions to x64 - and they still work great in ableton 9/10 win7/10 (although you have to apply the "sluggish gui hack" in the jbridge settings or their ui's will not act right)
make music, not walls.
  Member 19.10.2017 59
I bought them waayy back. Not so good on pc in those days

Wonder how they are currently?
Noize Maker

- Trying before buying since ~1998

2016+ paying for stuff that is actually used.

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GRM Tools Classic Bundle VST v1.6-H2OKadenze - Creative Programming for Audiovisual Art S1Kadenze - Creative Programming for audiovisual art S2INA-GRM GRM Tools Complete Collection v 3.3 MacOSX

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