The Blue Preamp is the Channel B (left side) of a two-channel pedal. It is a very flexible booster with good frequency control capabilities.
This kit contains all necessary parts, here´s the partslist (BOM):: Parts list
Knobs are not included in the kit, please select yourself. The pots have a round 6,3mm shaft.
The pcb has the dimensions 100mm x 44mm.
Here´s the documentation for the project: