Boss OS-2 Distortion Channel

[WGTP]

The Boss OS-2 Overdrive/Distortion has a SDS-1 type overdrive "channel" and a DS-1 type distortion "channel".  The 2 channels are blended via the "Color" knob.  This is a schematic of the Distortion channel that is a little different than the DS-1.  It has the Rat like dual RC network to ground from the feedback loop and a Tube Screamer/SDS-1 type tone control.  In between is a notch filter.  Something a little different for Rat, DS-1, Distortion + fans.   

http://www.aronnelson.com/gallery/main.php/v/WGTP/OS-2+Distortion.GIF.html?g2_imageViewsIndex=1