Vincent Brient of TotalDAC reports that they now offer a DSD option for all d1 Series Vishay-foil R2R ladder DACs.
They still work the same way for PCM but now also accept DSD in the standard DoP format via USB, AES/EBU and S/PDIF. The 69-bit volume control also works with DSD so the preamp functionality remains.
Our USB to AES/EBU reclocker now also accepts DSD and can transform DSD to 24/176.4 PCM with volume control. This can make any DAC DSD-ready. Our music server too handles DSD via DoP or converts it to PCM.