Ok, this is cool - I had two guys volunteer to bang on the design a bit and also support those who need it during the build process, so I met with my tech today and we went over the basics. to keep this simple (and keep it as affordable as possible), we decided to skip the inductors, so it's shelf only, will allow for boost and cut at variable frequencies. Will have a solid state buffer and makeup amp, so interfacing won't be an issue. This should result in a very clean and transparent EQ that's good for overall shaping.
Obviously if you want something more complex, it's up to you, but this will be the basic design. We can have a mod thread if people want to...
More to come...