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OP-X PRO-II out!      Click here!
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The Bentley line:

OP-X PRO-II   Top seller!

The bentley version of OP-X PRO and new top flagship of the OP series. For those who want more of everything.

Format: VST, AU - Mac / PC   info

learn more     purchase     listen     demo

Native M1 universal

The Sampling line:

Stringer 3.1   New!

Maybe the highest quality samples available on the planet from three chosen famous string machines: Logan String Melody II, ARP Omni 2 and Weson Symphony.

Format: VST, AU - Mac / PC   info

learn more     purchase     listen     demo

Native M1 universal

Discontinued products:

The Standard line:


The emulation of the famous OB-X. Awesome sounding analog synthesis using separate voice design (SVD).

Format: VST windows, reaktor5 (mac/pc)

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Based on OP-X offering a lot of additional features for a tremendous sound potential. OP-X owners can get this one for a cheap upgrade price.

Format: VST windows

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The Mini line:


Ultra affordable preset player capable of loading and playing all those great OP-X sounds. Can be upgraded to OP-X anytime!

Format: VST windows

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Completely free! A handfull of chosen original OP-X sounds at your disposal that you will going to love. Download and get infected!

Format: VST windows

learn more     download for free!

The V-Machine line:

V-Machine Bundle

The analog power package for the V-Machine and V-Rack! A ready to play bundle of adapted versions of OP-X and Stringer including preconfigured banks and two send effects.

Format: V-Machine   info

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The table linked below lets you compare the features of the legacy products (not available anymore) OP-X, OP-X PRO and OP-X PLAYER to the features of OP-X PRO-II:

Comparison Table

With the former banks library OP-X PRO-II allows you to have the original sounds of all legacy OP-X versions and refine them with the new available features:

Banks of OP-X, OP-X PRO and OP-X PLAYER for OP-X PRO-II

Receptor versions:

OP-X PRO-II is user-installable on Receptor 2.0 and above. Receptor 1 doesn't support it. Former versions of our products were pre-installed in demo mode in Receptor, but Muse Research isn't in the business anymore and so there's no support for it anymore. Here's the Receptor support site:

OP-X PRO-II Receptor support page


The available products are available for both Mac and PC in both 64bit and 32bit format. Please make sure your host supports the available formats:

Windows: VST2 32bit, VST2 and VST3 64bit
Mac: VST3 and AU 32/64bit

Windows: VST2 32bit (older version 2.0), VST2 and VST3 64bit
Mac: AU 64bit

Protools RTAS and AAX aren't supported, but it should be possible to use the plugins in Protools with meta-plugins like these:

Blue Cat PatchWork.

DDMF Metaplugin

For a free (at least almost free, minimum $2) Meta-Plugin you might check Kushview Element:

You don't have a vst host? Here's a list of tested free vst hosts:

Recommended free vst hosts

Because we simply can't test all possible combinations of operating systems and hosts we ask you for testing the plugins in your current configuration with the demo versions before you buy.