That's some very helpful comments Scott - but I echo the question: do you not find that the KP-100s delivers enough bass on it's own for the rooms you into to use it in? I find that the KP-200s has an incredible amount of bass even in large venues but maybe that's just a reflection of it's overall power. I have powered subs but I haven't needed them with the KP-200s so far. It is great having a one-piece stereo amp that covers so many needs though... glad it's working out for you, but I'm still curious about your thoughts on the KP-100s' bass response in live use.