I've recently acquired a couple of Sony Masterworks Expanded Edition discs and they are most acceptable. The blurb on the cover reads:
--"Features Sony's DSD System and SBM Direct for best possible sound quality"--
Without trying to revive the medium v. method thread/argument, what is SBM and is
DSD/SBM cost prohibitive? If not why do we not see this as a regular mastering technique?
Cheers