I'm missing the magic here. It adds noise, and fizz, to the otherwise beastly tone o' the Roadster.
What are you guys settings? I'm running it direct, (guitar -> 808 -> input). Should I be running it in the loop or something? It seems pointless, because I can essentially do the same thing by turning the presence up.
Keep the gain below 9 o'clock, the level all the way up, and the tone around noon. This will tighten up the low end without adding any real "gain".