Available as an assembled Module and as a DIY project.
No info about availability.
Oberheim SEM multi-mode filter clone
Jeff Farr design. Kit from Synthcube
https://www.modulargrid.net/e/other-unknown-sem-vcf-
http://www.muffwiggler.com/forum/viewtopic.php?t=69431&highlight=sem
Free The Tone SS-1V String Slinger
Gibson SG Special Faded with Ebony
Moog Minifooger MF Boost
Neumann KM 184 mt Small Diaphragm
Roland Cube Street EX 2-Channel 50-Watt
Empress ParaEQ with Boost