This was a very simple build and came with excellent instructions, although I would prefer it if they added a little more info to the documents, such as an actual wiring schematic and brief explanation of what each component is doing in it's certain place. If you're thinking of tackling some of the various effect projects that are available, this one is great for initial practice, but don't plan on understanding how it actually works by what's provided in the instructions. All in all, this is a very inexpensive, usable and good sounding boost that will likely be on my pedal board for a long time!
