They're great amps (especially for the money). I had mine set flat with contour all the way off, slight presence boost, tweeter completely off and boost at about 11 o' clock. It, with my Stingray produced a nice warm growl that cannot be duplicated with too many amps out there, even tube amps. I just got tired of lugging it around in a rack unit. I might pick another one up to keep for backup and the occasional change of pace.
Has anyone tried the new Fusion amp? That is very interesting as well. Last I heard, they would be available in Feb '08.