I wonder which CuBox version it has inside, the older with Marvell SoC, or the newer CuBox-i with Freescale SoC? I had also the older variant as NAA for some time, but the newer -i model is much better hardware. Next question would be how the DAC is actually connected to the CuBox hardware. It could possibly work just by replacing the microSD with OS variant that has NAA software component installed. If it has CuBox-i, then I have a full NAA OS image available, matter of writing to the microSD and booting up.