It's a distortion pedal and OD.
4 knobs: Level (gain), Fat (bass), Middle (Medium) and Drive (distortion)

UTILIZATION

You must be very minutieu because by pushing the knob "Drive" 2 or 3 mm is reached quickly at the disto ...
But even being minutieu, I have not found the sound that suits me (metal)

SOUND QUALITY

I like the overdrive, pretty enough to make AC / DC, but I hang distortion at all
, Not enough fishing, and is not suitable for what I want to play.

OVERALL OPINION

I use it since I started to learn playing the guitar (ie 5 months) at the beginning I found it top, but now I find that the sound does not match the sound I desired.
I put 7 because it has served me well and because I like it generates the OD ^ ^
But with the experience, I do not buy it back, it's on.
I will look into an Uber Metal now ^ ^