What schematic is this? Bonzai

[ANDYEFFECT]

What schematic is this? 
 
I was walking for the internet and I ended up finding this. I saved in my computer and I don't know where I arranged. 
 
would an overdrive be?


http://www.andyeffect.com/bonzai_layout.JPG
thanks

[Bagge]

Take a look here, at the bottom of the page.
http://www.diystompboxes.com/pedals/featured.html

[ANDYEFFECT]

Take a look here, at the bottom of the page.
http://www.diystompboxes.com/pedals/featured.html

thank you