Overdrive and quite original type.
I have the first model (aluminum-colored box): 1 vol, 1 drive, a switch (snarl / bite), no knob of Tone.

UTILIZATION

Given the number of controls, the sound palette is quite Reduces, but if you like the sound is more than enough.
to finish, it's solid, and it is large (larger than a big muff!)

SOUND QUALITY

The pedals are supposed to "simulate" a light overdrive type 6V6.
I did not compare with a true, but it's even quite far from the drive channel of my classic 30.
In fact I use is:
- A boost of its clear on the classic 30's clean channel, it gives a more crystalline, Fender type, quite nice
- Cruncher for the clean channel of my amp

pushing the drive thoroughly, it was a fuzz type sound enough INTERESTED also.

OVERALL OPINION

In short, because PDAL INTERESTED trs type, but it can happen, especially since it is difficult to find.