No confusion, just read this by MoJo music, it explains it all simply.
Remember pcm (is Redbook), and R2R Multibit converts it "bit perfect".
DS delta/sigma (bitstream, single bit) does DSD, but only a facsimile of Redbook (pcm)
Cheers George
"When a PCM (cd) file is played on a DSD (sacd) or Bit Stream converter, the DAC chip has to convert the PCM to DSD in real time. This is one of the major reasons people claim DSD (sacd) sounds better than PCM (cd), when in fact, it is just that the chip in most modern single-bit DACs do a poor job of decoding PCM (cd)."