I understand that one is volumed controlled before the signal leaves the receiver (pre out) and one is controlled after (line out). I'm questioning whether or not that is the only difference. A receiver that has a line out compared to one with a pre out is essentially doing the same thing -- allowing you to send audio to another device, correct? The reason I ask is that I am deciding between the Denon 2113 and the 2313. The 2113 has a standard Zone 2 audio out, while the 2313 has a Zone 2 pre out. If I can get away with the cheaper 2113 and that model's audio out then that's what i'll go with.