I recently acquired a rare NRG Control A250M monoblock. It's in perfect condition and sounds awesome. After doing some research, I've come to realize that the chances of finding a matching amp are very slim. I took a look inside and it looks like this is the same as the stereo unit with two channels internally bridged. I have started thinking about rewiring the inside and adding input connectors for the second channel as it does not look very difficult. Any suggestions?