Paul, regarding the DSD to vinyl process, Pauler Acoustics seems to have a similar approach (to some extent)…how do you see it in comparison to yours? It seems they don’t touch the digital signal in their process, but I’m not sure.
"For the vinyl mastering process two stereo pairs of identical signals were needed. These signals must have a time offset of accurately half a turntable rotation. When cutting at 33 1/3 rpm this offset is exactly 0.909 sec. The signal arriving first will not be used for the cut, but serves as a control for the feed screw mechanism of the cutting stylus. Thus the required space for the groove is calculated for the signal that will run through the cutting stylus 0.9 seconds later.
To avoid using the normal PCM digital preview delay, we preferred instead to use the 1bit-data stream of our SACD mastering system for this vinyl. In our DSD workstation we configured the two stereo pairs on a 4track EDL with the exact time offset to obtain the preview and playback signals. This procedure was technically extravagant and possibly never been done before but thus we can guarantee that the Super-Audio-CD and the Vinyl were derived from exactly the same master."