Jekyll + Maxod Rod 881 = Super warm and super fat
I usually leave the Jekyll turned on with the gain all the way down to get that slightly saturated fat sound on my cleans.
I just use different pickup configurations to change the voice of my tone.
Then, just stomp on my Maxon for that either overdriven or distorted sound.
Jekyll is pretty good in boosting your low end and as for the Maxon Rod 881, it gives that nice tubey feel of a high gain amp.