It's somewhat different than the modi uber in that it uses 2x of the 4490 DACs and has 2V out on SE and 4V out on XLR (as opposed to the 1.5V on the Modi Uber). And their specs list <0.001% for both THD and IMD on the Jot 4490 card (as opposed to 0.002 and 0.003 for the Uber).If it is the same thing as what is in modi uber, I have reviewed it: https://audiosciencereview.com/foru...n-of-schiit-modi-2-uber-and-topping-d30.3207/
It just seems like this one (as long as the case is grounded properly) could actually do the amp portion of the Jotunheim justice in terms of measurements where the multibit holds it back in terms of the distortion. (listed at 0.005 and 0.006% on their specs)
*edit* I actually own the one with the Dual 4490 card, so could loan it at some point, although I know you have a backlog and I already have the Mojo in the queue.