Most players understand there are only a couple basic circuits for overdrives with minor variations in a few electrical components. This pedal with it's completely transparent sound (no annoying mid hump tone change when engaged) is the absolute best version conceived. Complete control on stage you can go from a little bit-o-grit to searing smooth sustain overdrive tones without having to adjust output level or tone. Amazing, simple concept that makes other overdrive pedals obsolete.