David Rolo Effects
The Bipolar Bear is a dual overdrive with on one side (South Pole) an opamp overdrive with mosfets in the clipping section. The South Pole side runs on +9V/-9V using a charge pump and its drive knob can go from full overdrive to clean boost.
The higher supply voltage gives it enough headroom to allow a big clean boost without clipping.
On the other side (North Pole), a distortion derived from all kinds of Mu-Amp circuits using jfet transistors.
Each of the circuits have a volume, gain, tone and mids control and can be used individually or stacked (south into north)
The pedal has a buffered bypass and runs on standard (Boss style) 9V power supply (no battery)