SPDIF output PCB

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My new PCB for digital/SPDIF--Time relock,redintegration,less jitter,to support 16bit44.1→24bit192 and DSD
 

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You don't.
SPDIF has the bandwidth and would carry 2 channel DSD (not more), but... unless you can tap in the DSD inputs of the DAC's on the SACD player board, you don't really have other source of DSD. SACD is encrypted DSD so you need to de-crypt it first.

Or you can buy from here. Not too much stuff thou...
 
PCM needs three signals too (i2s)... There are just packed in SPDIF and regenerated at the other end (more or less precise).
DSD is not standardized to be send over SPDIF, but it can be done. Denon has Denon Link III that can send PCM or DSD over a CAT5 cable - basically three pairs carry three modified SPDIF signals.
 
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