you want to stay cheap look around for a used hk or marantz receiver 7300 7400 7500 or 7001 8001 i picked up a 7400 for 250 to use with my klf 20s and cerwin vegas ht, i cant turn it up all the way and watch a movie or play music without it being to loud for my taste i think that would more than suffice for your rf3s..ext and it wont break the bank