@harbapapa: It´s funny, you wrote your comment as if you were at my place yesterday. I tried both jRiver MC20 via USB and NAS->Minimserver->Bridge with several DSD-files. While listening to these files I asked myself if I would be able to tell without knowing, if it´s DSD or redbook. The same happens when I´m listening to PCM-HighRes-files. With my PWD I absolutely preferred Highres-files; now with the DS redbook really catched up. Since I did the DS-upgrade I´m a subscriber to the wimp-HiFi-streaming service and I´m really happy with the sound quality.
BTW: Yesterday I burned two DVDs for my PWT. One with Highres-, the other one with redbook files. To my ears that was the best sound quality I ever got from the DS; this time with slight advantages for the Highres-files. Now I´m curious what will happen if I get the chance to try a streamer, like the Pink Faun, which connects to the I²S-input of the DS. But that topic is covered by another thread here at the forum.