FuzzHugger Scalable Pet dual gain device - Prototype (Graphic, no additional finish) 
Remember that sweet-sounding boost FuzzHugger made 16 years ago? Of course you don't. The Scalable Pet borrows those boost stages, but makes them scalable from clean to nasty. In-between the extremes are some warm and thick overdrives, with increasingly fuzzy breakup, despite remaining articulate and responsive to picking/strumming intensity (...to a point; you can max-out to some really staticy overfuzz). 
There's a On/Off footswitch, which activates either one or both stages. Each has a dedicated Highs, Boost, and Max knob. 
It calls for a lot of knob tweaking, but is a useful and rich sounding device.
9-18v DC (no batteries)