I would do a layout for this, but the diodes are not labelled on the schematic and I don't have one to check what they are. Instead, I built the Ripthorn FB-2 Preamp clone and am VERY satisfied with the results on both acoustic/electric guitar. It is not just for bass; it has a Fender tone stack w/ bright switch, I believe.
http://guitar-fx-layouts.42897.x6.nabble.com/Ripthorn-Bass-Preamp-td17692.html