So far so good! Not sure if it's going to replace the other OD that I'm comparing it to for the particular amp, but it definitely sounds good! Obviously, it's in the honeymoon phase so I need some more time with it. The switches on the bottom do make a difference. I had the volume like my other OD's maxed, tone around 1oclock and the gain just a hair above zero. I have the switches set starting from left to right going down up down up down. This to me is what sounded best so far. I did notice that I had to lower my noise gate pedal setting a little because it was too much for the pedal compared to what I had it on for the other.