Justin, if you like that Sunn thing, also do try the Ampeg for guitar with the amp input boost on -- it is killer, and has a unique crunchy thing going on (think Stones Get Your Ya Yes out).It’s mean with tons of grind and sounds like it’s about to explode in the best possible way. YouTube the reissue ones. The vintage ones are beasts as well, but there’s something about the gain structure in the reissue that really gets me going.