USB-B For Multichannel Audio
Record/Playback (24x24)
• SD Card Slot for Multichannel
Audio Record/Playback (24x24)
Can you record 16 channels internal to SD card AND 16 channels USB-B to a DAW at the SAME time??
A double backup so to speak.
Yes, you can record to SD and stream to USB at the same time 
~
Sample rate and pick point is shared (Config → USB/SDHC/BT → USB/SD) between them so sample rates on your DAW would need to match your desired rate to SD.