O.D. MACHINE - SUSTAIN & OVERDRIVE PEDAL

The Turtle OD Machine is different than the ones that I see on the web that were based on the Clean Machine circuit. The ones on the web have 3 resistors (collector, collector/base, emitter) and this has four that I assume are similar to the last stage of the Tone Machine (10k, 470k, 560 and 39k where TM has 10k, 470k, 1.5k, 47k).