Clearly I don't keep up on technology You're saying the PCM signal I'm getting is a more advanced signal than the Dolby or DTS-HD. Or at least I'm getting the signal I'm supposed to. In any case, I like the sound I'm getting. I just shouldn't be alarmed because I don't see the DTS light up. My Sony had a blue light on the front when it received Dolby. You could really hear the depth when that happened. Unfortunately, my hearing isn't that good. Now I have to imagine that the sound has that depth. Thank you for the reply, and I'll rest easy that the receiver is working properly. Now I need someone to tell me why HDMI pass through doesn't mean the video signal will pass through the receiver when switched off. Turns out it means someting entirely different. Oy.