I was one of the first to have my DS-1 modded with the Machine Head Pedals (11 Gauge) Fairlane mod back in 2011. Over the years, I've experimented with many of the DS-1 mods out there in pedal land. Didn't care for the Keeley mod. Very much liked the Indyguitarist (Wampler) vintage mod. But the Fairlane mod is still my favorite. Kind of a blend between the DS-1 and the Distortion+, with some additional tonal enhancements.