The USB port on the Oppo is a USB host. It hooks up to other USB devices and "controls" them. This works with USB thumb drives and HDDs.
From my experience, playback of lossless files on the USB HDD ripped from CDs don't sound as good as the same CD played on the Oppo.
Playback of good quality HD tracks lossless does sound very good.
This is not the same as a USB client port on most modern DACs which allow the computer to work as a USB host and the DAC is the client.
What Dan Wright is working on is providing USB/SPDIF inputs to the Sabre32 DAC.
I am not sure if the design is finalised yet, but it was meant to provide an input to the good quality DAC in the Oppo partnered with Dan's tube analog output stage.
So this allows you to plug the Oppo to for instance:
a better CD only transport
a Logitech Squeezebox?
a PC with USB connection
From my experience, playback of lossless files on the USB HDD ripped from CDs don't sound as good as the same CD played on the Oppo.
Playback of good quality HD tracks lossless does sound very good.
This is not the same as a USB client port on most modern DACs which allow the computer to work as a USB host and the DAC is the client.
What Dan Wright is working on is providing USB/SPDIF inputs to the Sabre32 DAC.
I am not sure if the design is finalised yet, but it was meant to provide an input to the good quality DAC in the Oppo partnered with Dan's tube analog output stage.
So this allows you to plug the Oppo to for instance:
a better CD only transport
a Logitech Squeezebox?
a PC with USB connection