I didn't have high expectations for this pedal, but actually I rather like it.
Its two slightly fuzzy sounding overdrives in one affordable box. The sound of the overdrives is a little dark, but in a cool sounding way, not a muddy sounding way.
When one of the the overdrives is enabled it sounds more or less like a normal overdrive pedal - great rock sound into a Marshall.
When you kick in both overdrives it becomes more like a fuzz. The two controls are interactive and you can get a few sounds out of it.
So I've been using it with a wah. Single overdrive mode normally, switching to double when I use the wah to get more of a psychadelic tone.
The nice thing is that when you roll back your guitar volume the sound cleans up *really* well and gets a bit brighter - similar to a fuzz face.