jkeny wrote: > Oh, I see - John Westlake is a very well known audio designer & E'ee > https://en.wikipedia.org/wiki/John_A._Westlake >
That's nice. -But he hasn't explained how something can make an audible difference but not show up on the analogue outputs of a DAC...- > > Right, so I'm even more quizzical why you have never heard some audible > difference that you couldn't measure? > I had similar thoughts about USB cables - lots of people reporting > audible differences with different cables - the ones I tried, I couldn't > hear any diff (I didn't go to the really expensive ones) so I decided to > investigate further starting with a USB adapter i.e no cable & I could > hear a difference > Okay, so we both have reservations about audibility of USB cables. That's cool. I have been listening to and measured many DACs with many computers and associated USB ports/adaptors. Even tried 'USB-ethernet extender' (http://archimago.blogspot.ca/2013/12/measurements-usb-cable-extension-with.html) for a year and the 'Corning USB3 optical extender' (http://archimago.blogspot.ca/2015/05/measurements-corning-usb-3-optical.html) for the last 6 months or so... Other than reducing the 8kHz PHY noise interfering with my analogue pass-through in my pre-amp which I could demonstrate was suppressed with the Corning, the DAC outputs have been audibly and measurably fine. Curious, could you tell me which adapter you thought was very poor? And how much difference you figure the adapter makes in the final output from the same DAC (presumably a modern asynchronous USB device with known low jitter)? Suppose Westlake never explains why he thinks the difference is not measurable in the analogue domain, do you agree with this statement and how do you reconcile that with your own experience of what you hear? Archimago's Musings: (archimago.blogspot.com) A 'more objective' audiophile blog. ------------------------------------------------------------------------ Archimago's Profile: http://forums.slimdevices.com/member.php?userid=2207 View this thread: http://forums.slimdevices.com/showthread.php?t=104340 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
