I've got an SWR Electric Blue coming this week ($200 from Craig's List!) to use with my Aggie 1x12 for a portable but hopefully beefy small rig, doing mostly blues and roots music. Does anyone have any suggested settings (I know it's all relative)? Particularly, do what degree do you use the aural enhancer circuit in setting up your sound? I've had mixed results using that knob for slab.