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In Reply to: RE: The problem is the method used to evaluate DACs and digital sources posted by Tony Lauck on October 18, 2014 at 13:51:07
"One would think that vendors selling "high end" components would have addressed these issues."
Yes, one would. I surely do.
Traditionally "audio engineers" think that the world stops at 20Kc and that a single point ground is THE answer. They think (thought?) that because it was usefully true in the tube/analog days. Ah, the "good" old days, some audiophiles and manufacturers still live in them.
For the rest of us that era is long gone, whether for good or ill is blurry and personal. Actually EMC issues have been part of the engineering life since the days of the superregens but pervasive clocked digital systems have really brought it home, as it were.
"...That they do not, is an indication that the "high end" marketplace lacks knowledgeable customers."
I don't agree with that Tony. Customers are paying for performance and expertise, they surely can't be expected to all have the knowledge and skills necessary to analyze these complex systems. Reading AA provides solid proof that most don't even though they have an exceptionally high level of interest in the gear and it's performance.
Rick
Follow Ups:
although Thorsten's post is just a summary of what many interested audiophiles with a science background know.
Sorting out mutual interference of multiple components is not an engineering challenge, although both posters make this out to be in stressing 'expertise' It is a technological fact of life in the modern connected world.
It may be of interest for me to say that I do all of the things that Thorsten says he does in friends' houses and that it is nothing new or contain any element of special expertise..
I have a Honda that passes all of the Euro tests, but every now and then, when passing groups of aerials, my sound system, though turned off, emits gurgling noises. Not being young, I have not bothered to look at the suppression capacitor or anything like that. But a switched off amplifier reproducing interference? This should be a challenge for a technician to track down.
we listen for the pleasurable experience of enjoying music.
When we pile up experiences, - we get the BEST indication of how a product sounds, within various contexts.
There is no USB DAC yet made that sounds as good as any of the top 3 or four DAC manufacturers. As much as we have any consensus in the SOTA, top-tier, high end audio playback systems, - this is pretty much undisputed...
"Asylums with doors open wide,
Where people had paid to see inside,
For entertainment they watch his body twist
Behind his eyes he says, 'I still exist.'"
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