Just because a DAC has asynchronous USB, does not mean the USB interface is well designed. The best DAC designer is not necessarily a great USB engineer, these are different skill sets. Smilar to a DAC, There are also many different levels of quality in the components inside a USB converter, like the input/output stages, the quality and separation of the power supply, the quality of the crystal oscillators that re-clock the signal, etc.
one DAC that I really want to hear is the schitt bifrost, I have heard/read that the USB interface is good, but I have also read that it sounds a bit thin, not detailed enough in the low end. The Usb board is interchangeable in this unit.
The USB converter that I feel is the best quality vs cost is the JKSPDIF mk3, for various reasons. Have not yet sprang for this one. I still use the Vlink 192, which meets all of my criteria except one, it is still powered off of the USB cable, which is a no no in a truly high end system.
one DAC that I really want to hear is the schitt bifrost, I have heard/read that the USB interface is good, but I have also read that it sounds a bit thin, not detailed enough in the low end. The Usb board is interchangeable in this unit.
The USB converter that I feel is the best quality vs cost is the JKSPDIF mk3, for various reasons. Have not yet sprang for this one. I still use the Vlink 192, which meets all of my criteria except one, it is still powered off of the USB cable, which is a no no in a truly high end system.