I am currently listening to the audio from my HR-22 by taking the analog audio out of my LCD-TV into a simple stereo amplifier (i.e. no digital decoders). The HR-22 is connected to the TV with HDMI. I just use a pair of bookshelf speakers. I was wondering - if I upgraded the amp to one capable of decoding Dolby Digital, would I notice an improvement (on those shows broadcasting in DD) in stereo sound over my current setup? Or is the advantage purely for a surround sound setup (e.g. 5.1)? I understand that not all DD broadcasts are for 5 channels, but some are stereo... The plan is to upgrade to a 5.1 setup eventually, but I was just curious as to the difference of non-DD and DD broadcasts on a stereo setup... Thanks!