Regarding USB cable choice with my cans I can hear a big difference from the stock. If your source files are hd flac then e10
can deliver some amazing sound with an aftermarket USB cable. Contrary to many views on the subject I've noticed
an improvement on all the dacs I've had including e10. If you check the USB audio spec on Wikipedia the transfer
Stream for audio is clock based while computer data has crc and packet handling. Any timing issues referred to jitter
between the source clock and dac clock can affect the analogue output wave from the wave. I find stock cables lack detail,
and warmth. Music can sound more metallic and harsh. So for the audio USB spec there has to be correction in the timing
for lost data. I think for audio optical cables are the best for hd audio and for USB buy the best cable you can afford. I am liking
the wire world ultraviolet which is their 'entry' level cable for audio streams.