Power into very low impedance loads is limited essentially by the output speaker fuses. If you fuse heavy enough to pass very high power into low impedance loads, there will be no speaker protection at all, and then you will be able to do the audiophlake thing, get to buy new drivers at a couple hundred dollars each to protect your 50 cent output fuses. 200 watts continious into 8 ohms takes a 5 amp fuse and that is enough to fry most any speaker voice coil. To contemplate more carefully what 200 watts really is, take two 100 watt light bulbs and turn them on in a small metal box. After about 10 minutes come back and place your hands firmly on the metal box. While you are getting your third degree burns treated, think about that much heat running thru the tiny voice coil wires in your speakers. Now you have a good understanding of 200 watts.
Frank Van Alstine