From Revv's website,

"The Northern Mauler is a Glenn Fricker signature pedal combining Revv's trademark high gain tones with the unmistakable sound of melodic death metal & metallic hardcore. The "Swedish chainsaw" is the grimy, chaotic sound of metal’s most aggressive genres, but you can also mix it into your traditional high gain tone to add cut, character & make your sound memorable. One half of the Northern Mauler is a custom-tuned Revv high gain amp tone & the other is our homage to the HM-2*. The blend knob gives you total control from 100% Amp Circuit, to 100% Chainsaw Circuit. Use a blend of the tones to transform your clean channel into a metal monster or boost your high gain amp with the Chainsaw circuit."

If you have any questions, let us know!