Hello all, I just happen to have a receiver, and I just ordered myself a Beresford mk6. My question is, would my receivers' DAC re-convert and undo what the external DAC did to the signal?

I recently tested out a new set of bookshelf speakers, and decided to use my cheap mic to chat with someone on Xfire... and then all the other person hears is loud noise and not my voice. what happend?

My question is this: If i were to use a DAC for those 3 things i do, would all i be losing is the EAX and all things dolby? Or is there something else i will be missing out on? I currently have 2 Polk Monitor30's and a Polk PSW303 with some random Yamaha receiver. I do not intend to use...