Available as an assembled Module and as a DIY project.
This Module is currently available.
Discrete SVF + Moog CP3 Mixer
From Muffs:
"It started life as the SVF design (based on the J. Haible discrete 2040 gain cell) which Scott Stites posted over at electro-music in April. I'd been wanting to work with another filter for a while and this one looked interesting, so I started playing with it. I lopped off the audio input section and grafted on the CP3 mixer (moar transistors!) and that's what you're hearing in this rather short clip. It's definitely interesting! A very thick, rich-sounding filter with a lot of different personalities depending on how hard you drive the inputs. "
see:http://www.muffwiggler.com/forum/viewtopic.php?t=88663&postdays=0&postorder=asc&start=0
25 Users are observing this
These merchants probably sell this module. Huh?
Manhattan Analog Discrete SVVCF