Pigtronix has been making pedals since 2004. This particular pedal is a Rotoron rotary Speaker Simulator. This pedal is an all analog rotary speaker effect that combines frequency modulation, phase shifting, tremolo, bucket brigade-based chorusing and a three-way crossover all meticulously voiced to achieve unsurpassed, three-dimensional rotary realism in a compact, easy to use pedal. It works just how a Leslie speaker would but with faster and slower options than most Leslies are capable of. Not to mention, it takes up a fraction of the space. This one takes an 18v neg tip power supply and has two pieces of velcro stuck to the bottom.