Here are some samples of what you can do with the Resonant Lopass Gate PCB I offer at my website shown above. You will find commentary about this DIY project including samples of running a guitar through it, a voice through it, and music from an iPod through it. Modules used include the Oakley Sound Preamp/Envelope Follower Module, and the Lopass Gate module with a bit of TC Electronic M350 reverb at times. Songs are shown for demonstration of this module only.
Thanks to Don Buchla for giving me permission to make these PCBs! A true gentleman and scholar of electronic instrument design!