Tube Screamer Analysis together with Boss Ds 1 Classic Distortion Effects Pedal Modded as well Distortion 20Boost 20and 20Overdrive together with The Fender Princeton  lifer besides Distortion Pedal Schematics. on tube guitar pedal schematic
{"Image Orientation": "Horizontal (normal)", "Image Software": "Google", "Image YCbCrSubSampling": "[2, 2]", "Image ExifOffset": "70", "EXIF ExifVersion": "0220", "EXIF ExifImageWidth": "800", "EXIF ExifImageLength": "461"}