I have a 1000watt speaker system (500watts for a passive amp) and a 500 watt receiver (Yamaha Rx-v371) now i know that wont work so im looking to get either a better receiver or an amplifier/pre-amplifier. the problem is that i dont know what im looking for. if i get an amp do i need a pre amp? should the amp be 1000w? im not sure what i need. also i am unsure if my receiver has a pre out or not. any help is greatly appreciated!