I had a thought. (Always a bad idea) There are many receivers with inadequate power supplies, at least compared to the claimed amplification. It seems that most receivers can meet the watts per channel spec if only 2 channels are driven, so there is nothing wrong with the amps, only the power supplies are incapable of feeding them. So what is to stop someone from changing the power supply? If there is a deficient component on my computer, I pull it out and change it. Of course there would be warranty issues, but aside from that, is it doable? What sort of power supply would you need. What about computer power supplies - newer computers demand as much as 400-500W. And how complex is it - ie are these components modular, like in a PC, or would it require soldering - desoldering etc.