I have a simple buffer (beavis audio), but is there any good diy options for a wah buffer that doesn't include hard to find ic chips?
The Klon buffer is a simple one, and uses a TL072 which is common.
I use the Foxx Roxx Wah Retrofit buffer in some of my wah buildings and it does the job pretty well, and is a pretty easy circuit to build
Foxrox wha retrofit here too .
Mich P.
i use a jfet buffer, like the one at fuzz central