The Lounsberry Tall Fat and Wide is a stereo boost pedal based on a FET design. It is not just designed for guitar players, integrating very well in a keyboard, organ, or bass guitar setup. There are only two controls with Fat setting the amount of drive, while Tall sets the level.
There are 2 sets of outputs, with one bypassing the drive section when using TRS cables for those that are looking to use the pedal only as a clean boost. It can also of course be run in mono, but this boost is for guitar players running stereo rigs or for those using stereo devices like synths or keyboards.