Fuzz that's warm, heavy, with definition and thump?

[999Brent]

I have found a 2nd tone trick to the Brown Acid, you need the fuzz almost at is lowest point and tone anticlockwise as well.
Simply turn the fuzz down until you hit a 2nd more synthy tone.
It is quite a sudden change on my BAcid

 

[4stringmf]

Yup.... Low is pro with the Brown Acid. Easiest pedal with more than one dial I have ever used.

 

[heavyfunkmachin]

I’ve gone deep in the muff rabbit hole, my suggestion would be the pharaoh, with t he mega collider as a second best for what you are after