I need some basic advice on mainly preamps and amps and whatever else I need to know to get my system started. Rignt now I have a Yamaha reciever with two Polk RT800i speakers and a diy subwoofer (Ascendant Audio Atlas). Im really looking for a budget preamp and amplifier as this will be my first system. I was looking mainly in to Adcom and also found some Acurus stuff on ebay. I would like to keep it one brand for looks but if I have to get different brands its ok. I listen to music at a pretty moderate to loud volume and movies always loud. I would really like a preamp that can do 5.1 as I am planning a polk CS400i for the center and two more polk surrounds that I havent decided on yet. How much power will I need for my Polks? Their site says the RT800i can take from 20-250 watts of recommended amplifier power. Thank you for any help you can provided, I will be checking this post frequently.