Its a great pedal, sound really crunchy, I got a peavy vyper sometime I use this If I want a crunchy style, but the amp I got is really good and has its own distortion styles, I use the heavy metal config on this pedal, I recomend it to anyone... does not introduce noise, I run it on the stock battery, it still works, you can make your guitar sound like Metallica or Megadeth, of course it also depends on a lot of things, like pickups, amp, etc..., I also have a very old little peavey practice amp, this blows away the distortion that it has with less noise and gives it a new life.