Elberoth2,
There is indeed no DSD upsampling with SACD. That said, with the Puccini, when playing an SACD, you can go to the set-up menu, and still switch between what dCS describes in the manual as DSD upsampling or PCM oversampling modes. And then from the remote, one can choose from the various DSD filters or DSP filters. In DSD mode, dCS calls it DSD upsampling in general, but of course, when playing an SACD, there is no DSD upsampling. I guess dCS uses the term generally but more in reference to redbook CDs, recommending that redbook CDs be upsampled to DSD for best results. But now with the Asymmetric filter in PCM mode, the game has changed by leaps and bounds.