GLTTR!

SCORED 9/10 by Guitar.com! 
"It’s a pedal that can do the job of a big pile of modular gear, in the specific setting of noisily feeding everything back into itself to create violent cochlea sandpaper – the job of the musician, in the case of things like GLTTR!, is less about playing the gear and more about shaping it and directing the flow of the output."

GLTTR! generates cascading noise that evolves over time. It's easy to use and even reacts to your playing when it feels like it. You can use it alone or with any sort of sound source plugged in, which will both affect the resulting textures and come through a bit dirtier than before. No matter what it will deliver that beautiful noise you crave. The secret to the GLTTR is the absolute abandonment of consonance and expectations.