If you buy an amp, I recommend Infinity Kappa Four. Search it on ebay they're like 226 bucks or you can get it refurbished from the Harman page on an auction for like 100+tax\ and its 600 watts.
125wx4@4ohms
150x4@4ohms
300x2@4ohms bridged
It is a really good amp I have it and I love it...