USB signal cleaners are in fact able to make quite audible differences in low-mid tier DAC however, as I heard a fairly sizeable improvement with with current DACs with the Wyrd. Was thinking to try Wyrd + SU-1 into my DAC's
Not to the degree that just buying a better DAC will achieve.
And a Wyrd + SU-1 is pretty much a declaration that you're affected by a hard-core case of USB-nervosa.
Personally, I'd take that MIMBY over the X12.
And I wouldn't spend a dime on USB "fixes" for either of them, since "useful" improvements to either can be had for less than adding good DDC.