Fulltone ceased offer their Bassdrive Mosfet years ago, so this is my mini version of it with all of the features of the original but in a much smaller 125B enclosure. In my opinion, it's a great sounding bass overdrive that can be used as a clean boost, a slightly dirty drive, or all the way up to a very heavy overdrive/distortion. It has a 3 mini switches for mosfet/standard, comp (comp-cut), mids (flat mids). On the Mosfet/ standard switch, standard is dual asymmetrical silicon diodes, and the other, an asymmetrical mosfet/germanium clipper. The comp mode setting removes the clipping circuit but still yields a fair amount of overdrive with the drive control. This pedal comes in 125B with all top jacks, a true bypass (left-green led) and a Boost footswitch (right- red led) which corresponds to the red knob for the level of the drive. It can run on a standard negative center 9 volt power supply or also be used with up to an 18 volt power supply for more headroom and output.