Suggestions for a good stereo preamp and amp

I have a pair of b&w 704s, which I have been driving with Rotel rsx 1057 for the last 7 yrs. My receiver is not working.I need to repair it with factory later. I also have a Rel T1 sub and Oppo bdp93. The speakers are 150w in 8 ohms. The rotel only had 75 watts/Ch, and I always thought I never did justice to the speakers. I still want to stay with 2.1 system,but need to move to separates.I do not have a very large budget, but may be able to spend up to 1500 dollars. I heard about Emotiva, but not totally sold on it.If some of my good friends who own a pair off b&w speakers can offer suggestions, that will be wonderful. This system is in the family room, not enclosed.