This is a Pearl overdrive clone. The only mod i did was to widen the Q. I might socket those caps and try the stock values.
I've only played it for an hour but it seems best to me to use this to push an amp that's already breaking up. I wouldn't use it as a stand alone overdrive into a clean amp.
I would describe it as a cocked wah boost and overdrive. I've gotten some good Boston tones and Some good Slash lead tones with it. If you are into those kinds of tones you should give it a go. That's my 2 cents
(http://i1377.photobucket.com/albums/ah72/mspitler78/Mobile%20Uploads/image_zpstkbvhjd4.jpeg) (http://s1377.photobucket.com/user/mspitler78/media/Mobile%20Uploads/image_zpstkbvhjd4.jpeg.html)
(http://i1377.photobucket.com/albums/ah72/mspitler78/Mobile%20Uploads/image_zpsbhiguc9r.jpeg) (http://s1377.photobucket.com/user/mspitler78/media/Mobile%20Uploads/image_zpsbhiguc9r.jpeg.html)
clean and beautiful
Just a quick update I socketed C6 and C7 then returned them to their stock values. I prefer it this way. I still wouldn't use it as a stand alone OD but it's a great lead boost.