John Curl's Blowtorch preamplifier part II

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Gamma? Is Bruce Banner a big wine drinker? Who are these people, wine enthusiasts desperately willing to experiment or scientists that want free drinks from spoiled attempts?

These were rapid aging experiments some done decades ago. Folks should realize that most of these industry sponsored experiments are to make horrifying plonk more drinkable/marketable. I've had "Great Wall" red in Beijing at a banquet, no comment.
 
Yes but data is buffered through many devices from point a to point b, so whilst the digital data is intact, any extras that have supposedly been imprinted on this data will have been discarded at the first buffer, or we end up entering the "twilight Zone"
 
This stuff about USB cables-memory sticks- ethernet cables etc. have been floating around for ages. I have heard claims that adding metadata screws with the sound. Its no wonder that high end audio is rife with quacks and charlatans. The desire to hear a difference is so strong that it overcomes the lack of a difference when pressed. Especially among a technology phobic population (old audiophiles).

Testing different copies is the easiest to do with tools like the ABX tool in Foobar: foobar2000: Components Repository - ABX Comparator or there is this: ABX audio testing tool . These tools allow you to compare at leisure and then determine if you actually heard the difference.

If someone does definitively demonstrate a difference then we can start to figure out how.
 
Maybe this will help, get a computer program with a known bug (say Windows 10). Make a copy, and then a copy of this copy, and then a copy of this copy, and then a copy of this copy, and then a copy of this copy, and then a copy of this copy, and then a copy of this copy, and then a copy of this copy... (x 1000, use USB Internet transfers etc). If the program when executed (after all the coping) still exhibits the same error, noting changed.
 
Well now that Samsung is acquiring JBL will the loudspeakers start coming with fire extinguishers?

George, I saw the claim to keeping pro based on the large stadium style system installs. The old management knew I was one of the folks who got them into that business.

Some years back after Harman acquired Crown Audio I was invited to a debut of their new (to them) offerings. They also showed a new brochure listing all of their large projects. I ask them for 4,000 copies of the brochure. The company president who produced it was thrilled but was surprised by the size of the request. Asking why, I explained all of the large U.S. jobs in the brochure were mine. He jumped up from the table grabbed the chief engineer who told him it was true. He was much nicer after that but I never got the brochures.

Those folks who know Mark Terry former JBL pro president might know about the boost he got from me in getting that job.

I did mention to the new folks one area of my unhappiness. Very easy for them to fix, but not on the menu.

In the very near future I may be assisting other folks. So large venues may not be a growing market. (Danley is also expanding there.)

So yes I expect the news release to say the pro division is important, even though most of the pro sales are on mundane made in China loudspeakers.
 
"This stuff about USB cables-memory sticks- ethernet cables etc. have been floating around for ages. I have heard claims that adding metadata screws with the sound. Its no wonder that high end audio is rife with quacks and charlatans. The desire to hear a difference is so strong that it overcomes the lack of a difference when pressed. Especially among a technology phobic population (old audiophiles)."

I think you're onto some serious truth with that. But the point that is overlooked is that a reason they're turning to this so much is the lack of "good engineering" producing products you'd want to listen to. Example the Oppo, great on paper, awful on the ears unless being used as just a transport.
 
Interesting that they are chosing to release an additional model rather than replace the DAC2. Either the ESS9028Pro is very expensive or they can see a premium market for it.

It's expensive, but one wonders why they aren't using the top grade 9038Pro.

I am also vexed by their insistence on running everything through a TI SRC4392 to convert to 211khz. They claim it's to move the ESS filters farther out of band, but the oversampling filter in the ESS chip has better passband ripple when set to sharp roll-off linear phase than the ASRC if I recall correctly. They have asynchronous USB so there is really no reason to run that through the SRC4392.
 
The 9028 is not really very expensive -- only $50 1 off.
I too wonder why they didn't use the 9038 -- why not go for the best of range - even that's only $70...

The TI resampler maybe allows some marketing hype to differentiate themselves?

In the grand scheme of things the DACs aren't expensive, true. Compare them to the cost of an AK4490/4497 or PCM1792A and they look pretty expensive though.
 
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