i use a sketchy sounds unicorn apocalypse, which is a clone of two discontinued eqd pedals (the acapulco gold and the dirt transmitter). it has a self oscillating mod added to it.
notably, it's the only pedal i use for both noise and deathgrind. it gives you that sunn beta lead cranked sound and that velcro like fuzz- i use it to replicate the "bass break behind a concrete wall to total roar" sound of those two excruciating terror lps for my bass, and i use it on vocals along with my jmt noisy mic.
