I-O DATA HFAS1-XS20U Setup Manual page 36

NETWORK Set the operation mode during USB-DAC connection.
RENDERER In OpenHome mode, even if you stop the controller app, it can be the play of the
playlist.
OpenHome mode is available in the corresponding controller app.
If you want to use the unsupported controller app to OpenHome, please set the
DMR.
Network Renderer Set it according to the controller app you use.
This unit is set to [OpenHome] at the time of purchase. Therefore, if you are unable
to operate this unit on your controller app, please try switching to [DMR].
USB PERFECT Depending on the USB-DAC to be connected, the beginning of the music contents
PLAY may not be played.
This function can be played correctly from the beginning of the music contents by
setting the silent playing time.
Setting Time Sets the silent playing time.
* If your USB-DAC is the validated model, setting [Auto] sets the optimum value.
DoP When connecting to a USB-DAC that supports DoP (DSD Audio over PCM Frames),
you can set whether or not to play music with DoP.
When DoP is set to [On], you can use the DoP system to play back DSD content.
When using a USB-DAC that does not support DoP, this is set to [Off].
DoP This is set to [On] at the time of purchase, and you can use the DoP system to play
back DSD content.
When connecting a USB-DAC that does not support DoP, this is set to [Off].
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3. Details of the Settings screen – 3.3. SYSTEM SETTINGS
36