Yes, I have the Dish Hopper plugged into HDMI Port 1, the 490 Theater system plugged into HDMI Port 2 (the ARC port), the DMP330 blu-ray player plugged into HDMI Port 3, and my Xbox 360s plugged into HDMI Port 4. The only time I can tell a difference in them plugged into the TV and feeding the theater system via the ARC port vs going through the theater system first and then to the TV is with the DMP330 blu-ray player, the sound is as good with it, but the volume is very low. I have to crank it up into the 80s and even low 90s to have the same volume all the others have in the upper 20's or low 30's. (the home theaters volume counts out on a scale of 1-99). When I plug a cable from the 330s HDMI audio out and into the HDMI input 2 on the home theater (video is still going direct to the TV) then the volume is as loud as the others. That's actually how the 330's manual suggest hooking it up if your tv or home theater does not have an ARC channel (which of course mine does), it's manual says use the 330's HDMI out 1 to go straight to the TV, and its HDMI 2 to go to an input on the home theater, and in settings set the HDMI out 2 to audio only. But doing so is a pain because you have to use the INPUT button on the home theater to scroll through ALL of the other possible options to get to HDMI 2 after you have inserted a disk. It wouldn't be half the pain if it was a one-push button to switch to a particular input on the 490 home theater system. My old Panasonic home theater had that feature. Made it really easy to learn just the couple that I used into the Hoppers remote on unused keys and switch to the right input with a single touch. The way I have it connected with everything to the TV first the TV works GREAT at selecting everything automatically, just really low volume on the 330 in comparison to the others for some reason. On a movie with some particularly soft dialog the other night we maxed the theater systems volume to 99 and could still barely make out what was being said by a couple of the soft spoken actors, which is what prompted my first post.