Electro-Harmonix, creators of the Big Muff Pi, POG, Memory Man and other iconic guitar effects pedals.
Back in 1968, guitar amps were intentionally engineered to keep players from experimenting with distorted sounds. Electro Harmonix changed all that.
For 40 years Electro Harmonix have been proud to contribute to many of the most famous recordings in music history. Their circuits won't ever constrain the color of your sound; rather, they give you the freedom to find it.