Michael,

DD-T-HD has dynamic compression encoded. Unless you can defeat that with your X2, the unpacked version your Denon is receiving may have DC enabled. I’m pretty sure that’s why it is lower than PCM. If it is sent as bitsream, the option is there to disable it, or select the amount of compression. But even with it disabled, there is a 4 db offset that I have not been able to figure out why is there. I had to set up the 3808 to bump up the input level for DD-T-HD. Other than that though, I can’t tell much of a difference in sound quality between it and MPCM. DTS-HD:M on the other hand….holy crap… it’s much mo’ better IMHO.