The Quantum Amp Overdrive project is a clone of the Ibanez MT-10 Mostortion MOS-FET Distortion, a fairly obscure pedal in the Ibanez “10 series” released in 1990 and discontinued in 1993.
It’s unique in that it’s the only Ibanez pedal with a 3-band tonestack, which was uncommon up until the 2010’s when you started to see amp-like pedals from companies like Wampler. Before then, the Marshall Shredmaster and Guv’nor (Drivemaster) were two well-known examples, but there aren’t many others.
The Quantum is faithful to the original MT-10, but with one added modification: a switch that lets you go between different clipping diodes. The original has a high clipping threshold using two stacked diodes in each direction, but with the clipping switch you can also select one 1N914 in each direction for a lower threshold (as in a Tube Screamer) or LEDs for a higher threshold.