I have a str-dh520. This seems to be a MAJOR issue with this line of Sony. I have a ps3 xbox 360 and blu-ray hooked hdmi to unit. When I have all connections made and get everything checked it works like a dream...sees dts, dd 5.1 etc. Then I set the unit to HD-D.C.s & thats when my issue happens. I turn everything off and upon turning everything back on...it only reads LPCM 48kz from every HDMI input. Been having it out with Sony; they're trying to say its a defective unit but it looks as though they did not fully test this unit in the slightest and it just won't do what it should. WE NEED TO UNITE AGAINST SONY TO FIX THIS ISSUE. These are brand new "quality" receivers and this should be a base feature.