"In a display of ignorance from a soon to be HD621 owner, do all SACDs necessarily have high res data formats? Think someone said some Bluray's do not. In those cases, wouldn't we want no upsampling in the Oppo so the HD621 could perform it's magic? "

AFAIK DSD has always run at the same rate, it is different from PCM and doesn't exactly have the same idea as sampling rates of PCM.

The Oppo isn't upsampling, it is converting from DSD to PCM and it does so at 88.2kHz.

Shawn

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