For any AVR630 owners, I have another question. I was reading over the manual last night about the crossover features on the 630 and here's my confusion. Can you use all the nifty crossovers on a source connected with RCA's (analog) or does the connection have to be a digital connection. The manual stated that they can only be used with a "digital source". I'm wondering about this because I'm looking at receivers to use for multichannel audio mostly. Thanks.