I think by the word super, you meant "asynchronous"
Not all USB interfaces are designed alike. Most are synchronous, with the PC acting as the master clock. As you can imagine, the PC clocks are not the most ideal for for high end digital audio
Asynchronous creates a master clock outside and puts the PC as a slave for sending data. It results in less jitter. Most of the better async USB DACs tout this feature.
And if that's not confusing, enough, not all asynchronous USB interfaces are identical either.
I've had very good results with a Wavelength Wavelink USB interface vs an M2Tech Evo, despite both claiming an async interface.
One of the best USB interfaces I have used is the OffRamp.
Not all USB interfaces are designed alike. Most are synchronous, with the PC acting as the master clock. As you can imagine, the PC clocks are not the most ideal for for high end digital audio
Asynchronous creates a master clock outside and puts the PC as a slave for sending data. It results in less jitter. Most of the better async USB DACs tout this feature.
And if that's not confusing, enough, not all asynchronous USB interfaces are identical either.
I've had very good results with a Wavelength Wavelink USB interface vs an M2Tech Evo, despite both claiming an async interface.
One of the best USB interfaces I have used is the OffRamp.