hi Alan,
for the Denmark in my system it was mostly hi-rez 'just recorded' files from the hard-drive that was being used to store the recordings off my Rockport. these were played back and then directly compared to the Rockport played straight.
then a week later i compared my impressions of how the Playback Designs sounded on redbook and SACD to the Rockport played straight.
the Playback Designs was closer to the naturalness and overall musical involvement of the Rockport.
as i mentioned; i just used Redbook for the Berkeley comparison.
for the Denmark in my system it was mostly hi-rez 'just recorded' files from the hard-drive that was being used to store the recordings off my Rockport. these were played back and then directly compared to the Rockport played straight.
then a week later i compared my impressions of how the Playback Designs sounded on redbook and SACD to the Rockport played straight.
the Playback Designs was closer to the naturalness and overall musical involvement of the Rockport.
as i mentioned; i just used Redbook for the Berkeley comparison.