Nightraven has taken his apart and offers some description of the tone of this strange unit: "it's basically an overdrive pedal that borders on fuzztone with the controls dimed and having a dirty amp to start with. very underrated IMHO - i think it's loads better than Tubescreamers and the various copies."
For a better idea of how it sounds check this demo video out:
Soniciv also uploaded a schematic for the unit:
8 transistors! Yep, they aren't all gain stages though as you can see there's quite a few buffer stages in there with a big muff type tone control at the end of the circuit (with a buffer either side of it!)...
And here's a great vero from Sinner over at turretboard.org: