Resonessence Labs Concero discussion/review thead
Dec 30, 2013 at 10:32 PM Post #1,516 of 2,480
  Nobody is saying your hearing is defective and you are certainly allowed to share your opinion.
 
I for one have not spent more than the cost of a interconnect on my USB cable.  But when you get to hear several USB cables and hear changes, then as with analog cables you can be a believer or not.  I am :)  Unfortunately I cannot hear for you and am unable to demonstrate :)  
 
   

 
Unfortunately, I cannot hear the difference between analog interconnects either. I cannot call you wrong because, again, I can't hear what you hear.
 
I will work my way through that article in the next little while (critical reading is tough for me), either way, I'm not sure I can offer any VALID opinion on that article.
 
edit: i'm going to make 2 initial points on that graph. 1) that article only applies to normal USB transfer, not sure if any of it applies to USB async  2) part of the reason Concero can compete with other DACs that are self-powered is because how the Concero filters the USB signal.
 
edit2: I've worked my way through the article.
1) the article was written in 2000, I wonder how many of those problems are still unresolved.
2) the author seems to favor firewire over USB (easier jitter management)
3) afaik the USB async was specifically design to combat those problems mention in the article.
 
*great site though, thanks for the link
 
edit3: did you even read the article, base on my reading of the material related to the graph, it basically said, if you screw up a whole bunch of things, that's what happens...
 
-----
I am quite familiar with those videos. I discovered R-Labs after being introduced to those vids  last year. I've watch those vids several times over and I was quite familiar with them. Nothing there indicates a cable makes any difference.
 
edit: I'm not comfortable with ad hominem attacks in a discussion
 
Dec 31, 2013 at 9:04 AM Post #1,517 of 2,480
  Nobody is saying your hearing is defective and you are certainly allowed to share your opinion.
 
I for one have not spent more than the cost of a interconnect on my USB cable.  But when you get to hear several USB cables and hear changes, then as with analog cables you can be a believer or not.  I am :)  Unfortunately I cannot hear for you and am unable to demonstrate :)  
 
Dang, could have been lost of cash there I suppose.
 
One thing we seem to be learning as time goes by in the digital realm is things are just not as easy as we think nor as easy as they seem.
 
The guys who design USB have a host of issues they must overcome.  Not the least of which can be shown by there data on what can happen to a signal:
 
Pretty interesting stuff in this short article:
 
http://electronicdesign.com/boards/480-mbitss-signal-integrity-becomes-issue-usb-20-designs
 

And since this is a Resonessence thread, be sure to take and hour or two for some interesting commentary about digital from the guys who make the dac chip.  Lots of unknowns they ran into that affected sound.
 
Mr. Mallinson
http://www.youtube.com/watch?v=1CkyrDIGzOE
http://www.youtube.com/watch?v=JYjHKv2_OqQ
 
Ok, done with my opinion :)

Interesting.  Graph is similar to one on the Oyaide USB page which I'm a big fan of.  Especially because they can be had for much less than typical "Audiophile" USB cables
 
http://www.neo-w.com/catalog/2010/06/d-usb_en.html
http://www.amazon.com/Oyaide-NEO-Class-Cable-Orange/dp/B003TNFCQW/ref=pd_sim_sbs_e_4
 
But yes, common sense dictates that the best cable is less or no cable, if your setup can accommodate it from a convenience viewpoint.  Unfortunately the direct connector isn't realistic for me with a desktop.
 
Dec 31, 2013 at 10:50 PM Post #1,518 of 2,480
It is often true that once the topic of cables comes up in any kind of AV thread whatsoever, the rest of the discussion sinks like the Titanic.

Cables can improve the sound, but it nearly always comes in the form of a tradeoff. Like more crystalline highs at the expense of slightly muffled bass. Or an improvement in "airiness" at the expense of imaging. Generally I don't upgrade cables anymore. Just gets too OCD and expensive. Then again, my system is only about $3k in total. Had I a $10k-$50k-$100k rig? OCD warranted full-on! :p
 
*ahem* so anyway... filter mode saved between power cycles? Yes please! 
 
Dec 31, 2013 at 11:49 PM Post #1,521 of 2,480
That's what I've been doing, but I just want to baby this thing. Also, I've got an Anker battery and a Y-splitter coming in. Woohoo battery power! I'll report back once I give it a listen. 
 
Jan 1, 2014 at 12:43 AM Post #1,522 of 2,480
Anyone know if the Concero HD (not HP) and Concero use the 32-bit volume control feature of the Sabre DAC, or does it relegate volume control processing to the source computer?
 
EDIT: Concero HD DOES as of 2.5 but not earlier, according to the changelog on the website and the Twitter. Not sure about the regular Concero, but I'm fairly certain the ES9023 does not include a 32-bit volume control.
 
So volume can be digitally attenuated from the computer on at least either the HD and HP with very little reduction in SNR or quality. 
beerchug.gif
 
 
Jan 2, 2014 at 9:39 PM Post #1,523 of 2,480
A while ago, we were discussing WASAPI and default device settings. Specifically -- why the Concero should not be set as the default device if you use WASAPI. I stumbled across the answer in this post (thanks, devhen): http://www.head-fi.org/t/692119/the-deals-discussion-thread-read-the-first-post/2055#post_10124178 . If the Concero is set as the default device, then system sounds and other crap that's not your music will be added to the audio stream, defeating the purpose of WASAPI. 
 
Jan 2, 2014 at 9:43 PM Post #1,524 of 2,480
  A while ago, we were discussing WASAPI and default device settings. Specifically -- why the Concero should not be set as the default device if you use WASAPI. I stumbled across the answer in this post (thanks, devhen): http://www.head-fi.org/t/692119/the-deals-discussion-thread-read-the-first-post/2055#post_10124178 . If the Concero is set as the default device, then system sounds and other crap that's not your music will be added to the audio stream, defeating the purpose of WASAPI. 


Ah! Thanks for the illumination! Learn something new everyday on Head-Fi.
 
Jan 3, 2014 at 6:21 AM Post #1,525 of 2,480
A while ago, we were discussing WASAPI and default device settings. Specifically -- why the Concero should not be set as the default device if you use WASAPI. I stumbled across the answer in this post (thanks, devhen): http://www.head-fi.org/t/692119/the-deals-discussion-thread-read-the-first-post/2055#post_10124178 . If the Concero is set as the default device, then system sounds and other crap that's not your music will be added to the audio stream, defeating the purpose of WASAPI. 

 


your dac as default device+foobar+wasapi exclusive mode+pc sound muted - results to sound only from foobar - I like that
 
Jan 3, 2014 at 6:56 AM Post #1,526 of 2,480
Jan 3, 2014 at 10:02 AM Post #1,527 of 2,480
your dac as default device+foobar+wasapi exclusive mode+pc sound muted - results to sound only from foobar - I like that


IDK if that would work -- does a system sound at zero volume still interrupt the foobar audio stream? Not sure. Seems convoluted to make the DAC the default device, then try to compensate by muting, when you could just not make it the default device... What is the point when you don't want to hear system sounds either way?
 
Jan 3, 2014 at 2:10 PM Post #1,528 of 2,480
 
IDK if that would work -- does a system sound at zero volume still interrupt the foobar audio stream? Not sure. Seems convoluted to make the DAC the default device, then try to compensate by muting, when you could just not make it the default device... What is the point when you don't want to hear system sounds either way?

It is easy to check whether it works.
You need the pc muted in any case when listening to foobar, otherwise any site sound when surfing can be disturbing.
With the dac as default device, switching from foobar to (say) youtube requires only unmuting the pc (one button push in my laptop). With the pc soundcard as default device I would need the additional step of setting the dac as default device.
If you say it is not a big deal, I will agree.
 
Jan 10, 2014 at 2:16 AM Post #1,529 of 2,480
   
I decided to order this PSU - just to get this cable that's included, but I'm sure I'll find good uses for PSU itself, too. 
tongue.gif

 

 
They should really consider selling this cable alone.  At the moment, I'm only able to achieve this using my Scotch tape trick with a typical USB Y-cable:
 

 
The only other ready-to-use cables that segregate data from power are very expensive, like these:
 
The KingRex uArt Y USB Cable:  http://www.moon-audio.com/kingrex-uart-y-usb-cable.html
 
And the even more expensive KingRex uCraft Y USB Cable:  http://www.6moons.com/audioreviews/kingrex12/1.html
 
[size=1em]Thanks for the recommendation, Pete![/size]

 
 
 
The TeraDak PSU arrived yesterday.  What a steal!   I can't honesty hear improvement using it to power the Concero vs. using my LiPo battery, but I can't hear any detriments, either.
 
Oddly, it doesn't include an AC power cord.  Oh well... I have plenty of those about.
 
Thanks again Pete.  It's great value.
 
Mike
 

 

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