Great project from Aion Electronics
http://aionelectronics.com/project/ares-echoplex-ep3-preamp/Very similar to the Clinch EP Booster.
Documentation:
https://www.dropbox.com/s/h5ogujjyxzbwj02/aion-ares-echoplex-preamp-documentation.pdf?dl=1Verified the layout with the charge pump on board.
Sounds good! a lot of clarity and harmonics at the end of my pedal chain.