Unfortunately, emailing the manufacturer does not always give you the correct info.
I emailed Integra with this very question about their DPS 10.5. Their response was that no DSD->PCM conversion occurs. Yet, when investigated further, I learned that the Wolfson DAC used in the DPS 10.5 (or any other DAC Wolfson makes for that matter) is not capable of processing DSD natively (that is...without converting to PCM first).
Again though...jury is out as to if it really makes a difference. Trust your ears...you'll be happier that way.
I emailed Integra with this very question about their DPS 10.5. Their response was that no DSD->PCM conversion occurs. Yet, when investigated further, I learned that the Wolfson DAC used in the DPS 10.5 (or any other DAC Wolfson makes for that matter) is not capable of processing DSD natively (that is...without converting to PCM first).
Again though...jury is out as to if it really makes a difference. Trust your ears...you'll be happier that way.