This pre-amp/distortion pedal is the pre-amp of the Peavey Rage 158 amplifier in a pedal form. It has an internal trempot so you can really punish your speakers. I think is great for stoner/doom/desert rock, and it was sold to me a a black metal-esque pre-amp. Sounds great on bass too! Selling because I recently bought another pre-amp pedal that I like a bit more. Pepers' Pedals is a one man operation based in New Zealand, and all the pedals are hand made. This specific pedal is 1 of 50 in the world, since he got served with a C&D from Peavey. Here is a demo: https://youtu.be/7PkSz4rgJPs