Two Sunfire Signature's wired together?


Has anybody here ever verticaly bi-wired two Sunfire Signature two channel amps. together? If so, what results did you find? Someone posted (not in Audogon) that the results were amazing on the speakers he has.
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Are you kidding? How many watts do you need? !! I'm not sure I see how or why two would be advantageous over one. Then again, I might be ignorant of some advantage I don't know. I have one original sunfire amp, and I can't imagine ever even using its full output.