Judging by the posted measurements of either the DAC2x or NOS1, there is no comparison.
Not sure if the Dac2x will bet the Calyx Femto Dac, which someone HUGELY recommended (audio designer who is completely unconnected to Calyx). Seems Calyx is using SOTA tech from military GPS tech. Audio is trivial for these guys, I am told.
However, I have the latest Lampizator L4 and that is sweeeeeeeet.
Clearly people are trying to copy the Lampi now, and I find it amusing.