Seems like there's a few camps for a digital preamp with various digital connections:
* stereo: Optical, coax/bnc, aes/ebu, usb
* stereo: Optical, coax/bnc, aes/ebu, usb, HDMI
* stereo: Optical, coax/bnc, aes/ebu, usb, HDMI, analog pass-through
* stereo: Optical, coax/bnc, aes/ebu, usb, HDMI, analog pass-through and analog inputs feeding an ADC.
* stereo: Optical, coax/bnc, aes/ebu, usb, HDMI, analog pass-through and analog inputs feeding an ADC, with way to record...
* multi-channel: SP3
With HDMI, I would expect a few inputs with one output with ARC
I think the analog pass-through makes sense for those that might want to add a HT later.
As for the Analog to Digital Converter, this seems very expensive way to add a phono for playback and arguably not a performance improvement either. Seems like a dedicated ADC for a computer would be the better way to go for recording as well. If you want a play records, the better option would probably still be with a BP1.5/BP26 and add a BDA for your digital sources.
This might make an interesting vote, assuming all the flavors are covered here...
Jim