Rick Kirk wrote:
what would be required to enable a clock sync via the USB connection between the PC and mixer?
With USB audio, the PCM stream itself can be used as synchronization source (similar to S/PDIF), but it appears this device does not support that.
I have also read that there are other devices that suffer from this same fault so there is potential that any fix may apply to more than this one device.
Yes, but nobody has found the time to write the code.
At the moment, the USB Audio Class 2.0 code supports a capture stream as synchronization source for playback, but only for devices where the descriptors correctly describe this.
P.S. I have also requested technical documentation from Roland for this device
The problem is entirely lack of time.
Regards, Clemens