This is a fantastic pedal for everyone looking for rich, saturated, musical overdrive and distortion tone. Although I actually bought it for the hi-gain channel (which really delivers), it's the lo-gain channel that surprised me the most. It's got beautiful warm tube-like tones that come really close to those generated by top-shelf tube amps.
A big plus over other pedals or preamps with two channels is that both have their own EQ, presence and gain controls, including very useful "tight" switches.
One minor fault: the metal clip that grabs the input jack was so tight, that the first time I removed the jack, I kind of wrecked it. it got all bent and I had to open up the pedal to take the clip out and bend it back into shape. I guess it was just this particular clip though, as there were no issues on the output side.