Comments on: Unique Innovation Technology Perfect Music Purifier USB Digital Cable https://pollux.positive-feedback.com/reviews/hardware-reviews/unique-innovation-technology-pmp-usb/ A Creative Forum for the Audio Arts Fri, 09 Feb 2018 19:30:09 +0000 hourly 1 https://wordpress.org/?v=6.4.2 By: Robert Schryer https://pollux.positive-feedback.com/reviews/hardware-reviews/unique-innovation-technology-pmp-usb/#comment-2020 Thu, 18 Jan 2018 20:30:00 +0000 http://pollux.positive-feedback.com/?p=22487#comment-2020 In reply to Robert Nalesnik.

A discussion about the topic: http://pollux.positive-feedback.com/audio-discourse/why-usb-cables-can-make-a-difference/

]]> By: Robert Nalesnik https://pollux.positive-feedback.com/reviews/hardware-reviews/unique-innovation-technology-pmp-usb/#comment-2019 Thu, 18 Jan 2018 06:05:00 +0000 http://pollux.positive-feedback.com/?p=22487#comment-2019 Can someone provide a solid technical explanation (to an experienced electrical engineer) how a USB cable can possibly impact sound quality, unless it is clearly defective? It is certainly not bit errors, the PHY layer (compromising the transmitting PHY, the receptacle, the cable, the cable quality, the receiving receptacle, and the receiving PHY) has a specified bit error rate of 1 x 10**12, which equates to one error every 8 days at Redbook rates. As an asynchronous transfer, the data are buffered at the input of the DAC, whose clock manages the timing and jitter as it ingests the bitstream. If there are timing errors in the conversion, there may be potentially audio impacts, but the cable has absolutely nothing to do with it, as the same (correct) bits that went into the cable are all just lined up waiting their turn at the input of the converter.

Enlighten me please!

]]>