I am looking for data on a couple of amps installed in my boat. I think they are both 2002 models. One is a Power 1000BD (or DB, I was looking upside down) 2 ch. and the other is a Power 750x 4 ch. I am looking for RMS ratings for these two so that I can compare them to the older (1999's) Power 800 a2 and Punch 200 a4 that I have in the garage. Any help would be great.