Available as an assembled Module and as a DIY project.
This Module is currently available.
PreenFM is a multitibral FM synthesizer
The PreenFM2 brings the old FM synthesis in a small open-source modern DIY box.
More info for read http://ixox.fr/preenfm2/
http://vandaal-electronics.com/product/preenfm-eurorack-module/
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