Hi, I have an a set of paradigm Studio 100 V4 fronts and CC590 Center hooked up to an Onkyo receiver 876. I was told by the salesman who sold me the paradigm that an external power amp would improve the sound. So, I am thinking about getting a 5 channel power amp Rotel RMB-1575 and then having the receiver just do the decoding and driving the surround back channels. My question is: would I notice a big difference in sound quality and clarity from the paradigms with the Rotel, or I will just be able to play them at higher volumes due to the extra watts? Is it worth the investment of the $2500? I don't care about the volume as it can get loud enough with the Onkyo. However if the sound quality will greatly improve than perhaps its worth the extra cash. Also are there any other power amp to look at that can be good alternatives to the Rotel? Thansk for your help.