Interesting thread... I recently upgraded my AVR from an Onkyo TX-SR706 to a Marantz SR6006 and noticed that my SACDs sounded "thin" after the switch. This would certainly explain things as the Marantz and Denons are very similar inside. This is with my Oppo 980H set to output DSD. I presume the Onkyo AVR handled DSD natively since it's display had a DSD indicator that would light when playing an SACD. I still have the Onkyo so I'll try to do some tests before I sell it.
9/20/12 at 11:56am