I actually have a guitar petal to get the perfect Fu Manchu tone
. It's got to be the nastiest petal that I own, and also one of the most useless unless you're playing Fu Manchu songs, but it's cool.
If you cranked the one dial up to full you got the rudest farting noises out of your guitar and random NES music.
08/23 - Alice in Chains
09/19 - Deafheaven
09/26 - Belphegor
10/18 - King Diamond
11/01 - Suffocation
11/30 - Devin Townsend