HUD-DX1 is asynchronous.


The difference between the synchronous type and asynchronous type is: in the synchronous type, DAC receives and executes the clock value of PC itself;  in the asynchronous type, DAC itself sets the clock value instead of the clock value set by PC and this clock value is sent through a PC.

HUD-DX1 autonomously supplies the refined clock instead of the unstable clock of a PC, enabling to play in better sound quality.