Great Rat style distortion. The only thing I would add would be a mids knob.
This thing has volume, gain, treble, and bass controls. It can go from subtle drive to raging almost fuzz distortion. I like the gain at around 1 or 2 o'clock, treble around 10 o'clock and bass around 1 or 2 o'clock. The bass control actually kinda frightens me after 2 or 3 o'clock.
The Blower Box sounds great fingerstyle or with a pick. It really shines with a pick though. There's just something special about he way the attack sounds with this pedal and a pick.
Every time I turn the BB on I come up with new and interesting riffs that I probably wouldn't have played otherwise.