The Pale Horse started as an electrical theory. How could the most classic overdrive pedal in history be improved? The answer has led to many changes & improvements. It boasts extended gain range, extended tonal range, triple the internal headroom, audiophile OPA2134 op amp (with NPN transistors biased into class A), LED or true Mosfet clipping, and more. I have tweaked and refined every aspect of this circuit, and it is the sweetest & most versatile overdrive pedal I have ever played.