Adds great low end distortion, its a no-nonsense pedal with 2 knobs (output and distortion), no extra knobs to fool with, its straight forward super easy to set up. The ONLY one thing I don't really like about it is that the 9v. power input plug is on the side (next to the instrument input) and it really crowds the instrument input jack position. So if you are into fancy cable management positioning on your pedal board, you might find this a challenge to get the cables just right. I must add here that the positioning of the 9v input issue has nothing to do with the performance of the distortion pedal itself. The pedal is built rough and rugged and works flawlessly. I just prefer the 9v power input to be at the top of the unit like 80% of the other pedals are. I give it a solid 4 stars.