My rear amp 300w just bit the dust. I have fairly power hungry speakers. I have a seperate amp for the fronts and subs, so I don't want to go to a 755 just yet. I might want to take the Phase Linear 400 that I am using for the subs right now and use it for the back and by a new or used amp for the subs (Two 15 inch). I need something around 200w per channel, new or used.