Interesting. They probably exist, but I don’t know that I’ve ever heard a fuzz with OTA chips. I have some I’ve been trying to decide what to use them in.
There are a couple of diagrams here. What are your asking? You’re better off hand wiring it, a board most likely will create oscillation because the traces are so close. Ask me how I know. 🤣
One of my favs. Now build the current lover, the Fraudhacker and the Kingmaker. I went on a Flanger tear, but there aren’t quite as many of them as there are phasers.