“To summarise: the problem with USB Audio is that Isochronous USB frames are not error-correcting. A lot of the really expensive USB cables from audio companies failed miserably I doubt many of these cables were even tested for High-Speed compliance.” “A good example of this is when we transitioned from Full Speed USB to High-Speed USB DACs. One workaround for this is to choose a music app with memory buffering but in my experience, even that’s not guaranteed to be 100%.” When a music app faults it becomes NON-bit true. “Also, it’s probably best not to put the library on the system disk – because system stuff has really high priority over music playback software and again the music software can fault and bad sound will result. Think of it this way: your music software is reading from the hard drive in a synchronous manner and then writing to the DAC in that same synchronous manner and, as the DAC has priority, the music software might fault when reading the disk – this can lead to really bad sound.” “For optimum results, at least in theory, it’s best not to use a USB hard drive for your library with a USB DAC connected to the same host device.
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