Assuming the CKK3 costs you $200, $300 is a strange sector for USB DACs. If everything I've been reading on the Pico DAC here is true (which I have a hard time believing otherwise) then it's worth the whole $500 just for the DAC alone. I think the only viable options for $300 USB DACs are those Chinese/Taiwanese ones like Zero, Paradisea, Constantine, or whatever.