The ODR Mod is a hand wired and hand finished pedal based on the Nobels ODR-1 overdrive circuit. The main complaint with the original pedal is that the build quality is somewhat questionable and that the bass is a bit overpowering for anything more than a tele bridge pickup. The ODR Mod is built with quality components like a professional grade 3PDT footswitch, quality Neutrik input and output jacks and Alpha pots with dust seals and also incorporates a bass cut option. With the bass knob rolled all the way up you will have that massive low end of the original pedal, but this pot allows you to dial that back a bit if you are using a humbucker equipped guitar or darker pickups. The ODR-1 is often referred to as "Nashville's favorite overdrive", now with the ODR Mod you can have all those session tones of the original with even more flexibility.