Such an amazing filter.
Hi , I was just practicing writing on Sid Factory II (testing ASID don't think this build is live yet), which is controlling the Therapsid via an elektron TM-1 midi interface (didnt have turbo on here), Therapsid was provided by Twisted Electrons many moons ago.
I Think this sort of thing is why Sid chips in particular the 6581's are so hard to emulate or make replacements of.