The Fire Power Booster it's a very well build and packed pedal with a simple but gourgeous design and fine components. The FPB has a clean/dirty switch but will not give you any kind of drive or crunch, it can be used as booster for gain and volume as well with 30db of boost, and also has controls to adjust treble and bass. It can work with 9, 12 and 18v and it's extremely silent and solid. As a clean booster this pedal does it's job very well but since his "dirty" option is barely noticeable, the FPB it's kind of a one trick pony to me. If you're looking for an straight clean boost pedal with an good cost benefit ratio, the Fire Power Booster it's an great option for sure.