The Dynamics 2806 is the first device from Frap Audio, a new division of Eurorack module manufacturer Frap Tools. Housing both a mono compressor and expander in a double-width 500-series module, the  Dynamics 2806 promises to offer precise control over a signal’s dynamic range in a single, straightforward unit.

https://www.soundonsound.com/news/frap-audio-launch-dynamics-2806

Here is a detailed review with audio examples of the Doepfer A-105-4 Quad Poly VCF.