The Electro-Harmonix Muff Overdrive is a reissue of the original Muff fuzz from 1969! We’re talking a simple simple design. Single volume knob and a dream. The pedal is designed to sound like an overdriven tube amp with worn/warm speakers. Definitely a darker and dirty pedal.
I came across this demo by Artur Tadevosyan showing with the Electro-Harmonix Muff Overdrive is all about. I’ve seen a few mentions that this pedal sounds the best with batteries. If you have personal experience with this, please let us know by commenting below.