Some interesting comments on what causes the differences in sound quality between USB cables - copied unashamedly by me from the Naim forum and originally written by member "Simon-in-Suffolk"
"so called sound quality is really determined by how susceptible your audio equipment is to interference, Powerline intermodulation, RF and EMI. If your equipment is immune from this (in the real world almost impossible) then different USB cable characteristics should give no variation in SQ. But since USB (1 and 2) is a reasonably loose standard in terms of physical electrical characteristics, USB leads will most likely therefore give the appearance of 'sounding' different, albeit it's their physical electrical properties affecting the performance of connected audio equipment.
So a well designed lead with a quality twisted differential signal pair, perhaps shielded and suitably decoupled powerlines into a quality USB connector could perform electrically better than a cable that wasn't as carefully, but still compliantly constructed.
However, the price of this should be minimal, and of course in this market anything slightly different has exponential margins and great scope for rip off.. Especially if it looks pretty.
BTW the same principle applies to USB memory sticks."
"so called sound quality is really determined by how susceptible your audio equipment is to interference, Powerline intermodulation, RF and EMI. If your equipment is immune from this (in the real world almost impossible) then different USB cable characteristics should give no variation in SQ. But since USB (1 and 2) is a reasonably loose standard in terms of physical electrical characteristics, USB leads will most likely therefore give the appearance of 'sounding' different, albeit it's their physical electrical properties affecting the performance of connected audio equipment.
So a well designed lead with a quality twisted differential signal pair, perhaps shielded and suitably decoupled powerlines into a quality USB connector could perform electrically better than a cable that wasn't as carefully, but still compliantly constructed.
However, the price of this should be minimal, and of course in this market anything slightly different has exponential margins and great scope for rip off.. Especially if it looks pretty.
BTW the same principle applies to USB memory sticks."
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