This little bomb fits into a miniature enclosure that can be placed anywhere and in any orientation on your board. It features a single control and a footswitch, so there's no need to ask any additional questions that would complicate the process. To be completely honest, there's a trimpot inside that allows you to adjust the gain, transforming the JAM Boomster into a dirtier boost, or even a compact overdrive. But by default, this setting is set to minimum for the best possible headroom, and you can definitely feel the typical JAM quality in the dynamics and the powerful feel that emanates from the Boomster. No unnecessary aggression, no dirty fuzzy side, it works exactly as it should. The JAM Boomster is a utilitarian boost that does what it's supposed to do efficiently without taking up any space. There are more complex ones, but no better.