I'm thinking you're right, but I don't understand why it would be happening. Yeah, you can choose the format of the audio you have going out digitally from the PS3. And it works fine in HDMI, but sounds like a single channel in either optical (which I choose 2ch @ 44.1 khz) or analog (which is obviously 2ch).
Yeah, there's just no way I could live with going through the 805's preamp section when I have such better sound quality going through the A5 integrated. I have to figure something out, even it means getting a new player.
Problem is, I don't know if it's the player or the A5 mixing the 2ch into 1ch. I've been thinking about it all day and I think I know what I'm going to try when I get home. I'm going to take the optical and analog out of the PS3 and run that to the 805 and see if I have the same problem. If I do have the same problem, I know that it's the player sending out 2 identical channels. If I don't have the same problem, well I'll be really confused then. I'll have to bust out an old player from the garage and try that one.
Any other suggestions to try?