It's just a Rangemaster with selectable input caps.
http://tagboardeffects.blogspot.com/2012/05/rangemaster-with-switchable-input-caps.htmlHere's something just like it. I personally would go with the DAM Red Rooster, as the input cap blend is variable, and it uses an NPN germanium, so you can daisy-chain it with all your favorite pedals.