https://line6.ideascale.com/a/dtd/USB-multichannel-output-through-sends/871298-23508
USB multichannel output through sends
The ability to assign the "audio interface" part of the unit to default USB 1,2,3,4 to Sends 1,2,3,4.
The idea is to allow users to have their DAW output something like click, cues, and backing tracks through the Helix (USB 1,2,3.4) and out to the 4 Sends without the need for additional hardware and without taking up unnecessary real estate in a patch.
This is sort of done now with USB 1/2 being able to be sent out directly to the 1/4", XLR, and Digital outputs. This would be an expansion of that concept allowing additional USB audio channels to be directed through the Sends as well.