So you've bought one of the many world-class USB DACsetwork streaming players featured in Hi-Fi News and have it connected via USB to your desktop or laptop computer, or even networked via your home hub. Really? Our own experience suggests that while 'data is data' there are sufficient causes of interference and jitter from circulating noise, including RF earth currents, and invasive traffic from ISP-supplied network routers, to prompt very measurable differences in performance once this data is finally crunched through an outboard DAC [see Lab Report, p59].
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