The Buff N Blend splits the guitar or bass signal in two paths. One is going through an effects loop, the other one goes straigt through. Using the Balance pot the signal can be mixed together again!
The dimensions of the pcb are 50x42mm.
This project is by GuitarPCB.com, in cooperation with Musikding. For any technical problem relating to building this project, please contact Barry at GuitarPCB.com forum.
You get full technical support at the GuitarPCB.com forum, membership is free of course! There is even more detailed build information available there:
Here is the direct link to the building docs, including layout and schematic: