Explore Neural Amp Modeler (NAM) profiles of the iconic BOSS SD-1 Super Overdrive, a legendary stompbox that's been a staple on pedalboards since 1981. Known for its asymmetric clipping circuit and smooth, amp-like breakup, the SD-1 delivers classic mid-focused overdrive tones that cut through any mix. Used by artists like Zakk Wylde, John Frusciante, and Joe Bonamassa, this versatile pedal excels at everything from subtle boost and blues-rock grit to full-on distortion when pushed hard, making it one of the most modded and beloved overdrive pedals in rock history.