Sallen-Key,
This was a very easy DIY Project. The quality and price is on point. A nice sounding and affordable MS20 Filter from France.
You can get the Full Kit or the ready built Filter for a very fair price here:
https://reverb.com/shop/black-noise-m...
https://www.etsy.com/de/shop/BlackNoi...
Instagram of Black Noise Modular:
/ blacknoisemodular
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