It could be possible, but that would be illogical. 44/16 is standard for usb audio, and doing more requires custom drivers at the very least. Very few dacs are limited to 44/16 over spdif (coax or optical)
Al, for anyone else, I'd say it's a good economical choice. But I know you have really high standards. I wouldn't be willing to bet the korg is better than the duet, for example.
It comes with software to offload the files. But you're still stuck with nearly useless files. DSD is awfully niche. The conversion software is apparently ok. But I'd still think what dotu is shooting for is higher end than this.
The MR1 is a cool little box, but then you have to convert it to pcm (96/24, 192/24, or whatever). And the adc abd dac aren't gonna be on a par with what dotu is shopping for.