Ok so i own a late 80's swr sm400. I am so happy with its sound, but the fact that it's got no fan and does not have the wattage i need is a problem. I was wondering if some experienced gear heads would recomend me adding a power amp to my rack to relief the stress of the swr and add wattage? or should i just make the move and get a carvin b1500 or a kustom 1000????? HELP!