Recently I got a new stand for my A/V system so I tore it all down and reconnected everything from scratch. I have a HD-DVR from DirecTV connected via optical and DD is enabled. When I flip through the channels I get a click or a pop from the speakers each time I switch to a channel that broadcasts a DD signal. This pop is heard just before the sound is audible and is not heard again until I change to another DD channel. The pop is not heard when switching to a stereo channel. I don’t remember this before because it would have drove me nuts just like it does now. If I disable DD in the HD-DVR the problem goes away. The only difference from before is that I’m using balanced cables between my 990 and 7500 but I reconnected the un-balanced cables to see if the problem went away and it did not. I have reset the 990 and unplugged it from power for 20 hours or so and nothing changed. I also tried a different optical cable.

Has anyone else noticed this behavior?