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Schiit Decrapifier released - USB power isolator
May 20, 2015 at 9:42 AM Post #436 of 578
has anyone "here" tried or seen a real test of the Elfidelity external USB isolator? - it appears to use a small switching supply and passive filtering  - I got a Behringer interface which has a 15KHx low level (~20dB above the noise floor) spike on my old laptop and its suggested the USB power is noisy (my old Xitel INport looks fine with RightMark)
 
Jun 3, 2015 at 5:36 PM Post #438 of 578
dooste-man83 said:
  is there any usb canble in the box of wyrd ? 
 
and next question
 
whats your idea about the usb cable have to Impact on sound quality of headphone ? 
Click to expand...

The Wyrd does not come with any USB cables.
 
I don't think USB cables do anything to impact sound quality. As long as the USB cable is shorter than a few feet, they all sound exactly the same.
 
Jun 3, 2015 at 5:52 PM Post #439 of 578
sludgeogre said:
  The Wyrd does not come with any USB cables.
 
I don't think USB cables do anything to impact sound quality. As long as the USB cable is shorter than a few feet, they all sound exactly the same.
Click to expand...


You don't thank that they do? Try a USB1.0 and a USB2.0 cable with some complex 24/192 audio files. That's an extreme case, but if you happen to stumble on a poorly made USB2.0 cable that's on the lower edge of the USB2.0 specification, the problem can be quite obvious.  
 
Jun 3, 2015 at 7:36 PM Post #440 of 578
baxide said:
 
You don't thank that they do? Try a USB1.0 and a USB2.0 cable with some complex 24/192 audio files. That's an extreme case, but if you happen to stumble on a poorly made USB2.0 cable that's on the lower edge of the USB2.0 specification, the problem can be quite obvious.  
Click to expand...

I don't think you can even buy 1.0 cables anymore, but yeah I wouldn't use that since it isn't rated for the bandwidth (I think) I should have clarified. I meant USB 2.0 and above cables, which Schiit does say the Wyrd is made for USB 2.0 and backwards compatible to 1.1, so 1.0 isn't even supported.
 
Anyhow, I have $1 or so USB 2.0 cables from Monoprice that I use with my rig at work and the $20 Schiit cables at home. I've interchanged both and there is no difference that I can hear.
 
Aug 10, 2015 at 9:52 PM Post #441 of 578
Do you turn off the Wyrd when you sleep the computer or leave it on?
 
Interestingly, I notice the AC Adapter itself has a 2 watt vampire draw. This is the same wether or not the Wyrd is on or off. 
 
Aug 11, 2015 at 3:07 AM Post #442 of 578

I am not turning off Wyrd when I am not using comp. But you can if you want - it is only a matter of convinience.
 
Talking about USB cables - yes they make a difference but Wyrd reduces the influence of USB cables. Shiit has a very good USB cable for 20 USD and I can highly recommend it. It stands proudly against some very expencieve and very good USB cables. It is really a great value USB cable.
 
PSU of Wyrd is not switching. It is linear supply based on LM723, which is according to Mr. Moffat, even better than the old LM317 reg. LM317 is a very good reg (used in such units like Naim and many others) and if the statement of Mr. Moffat is correct than there is no much to complain about. Of course that it is possible to make better linear PSU, using for example descrete shunt reg, but that will cost probably more than Wyrd itself.
 
I think Wyrd has a lot of sense for units like Shiit own Modi or Loki or if you are using something like Audioquest Dragonfly. I am not sure about more complex DACs, which usually already have a decent filtering at the USB input. That has to be checked first I guess ...
 
I have two pieces of Wyrd: one is connected to Win 7 machine driving Shiit Loki and the other is connected to Mac Mini driving M2Tech hiFace Two. I have them for about a year now and I can say that they are reliable units, producing no problems.
 
Aug 11, 2015 at 9:56 AM Post #443 of 578
dejanm said:
 
I am not turning off Wyrd when I am not using comp. But you can if you want - it is only a matter of convinience.
 
Talking about USB cables - yes they make a difference but Wyrd reduces the influence of USB cables. Shiit has a very good USB cable for 20 USD and I can highly recommend it. It stands proudly against some very expencieve and very good USB cables. It is really a great value USB cable.
 
PSU of Wyrd is not switching. It is linear supply based on LM723, which is according to Mr. Moffat, even better than the old LM317 reg. LM317 is a very good reg (used in such units like Naim and many others) and if the statement of Mr. Moffat is correct than there is no much to complain about. Of course that it is possible to make better linear PSU, using for example descrete shunt reg, but that will cost probably more than Wyrd itself.
 
I think Wyrd has a lot of sense for units like Shiit own Modi or Loki or if you are using something like Audioquest Dragonfly. I am not sure about more complex DACs, which usually already have a decent filtering at the USB input. That has to be checked first I guess ...
 
I have two pieces of Wyrd: one is connected to Win 7 machine driving Shiit Loki and the other is connected to Mac Mini driving M2Tech hiFace Two. I have them for about a year now and I can say that they are reliable units, producing no problems.
Click to expand...

 
I agree on the PYST USB cables. Nice cables for the price. 
 
Aug 12, 2015 at 1:20 AM Post #444 of 578
I wonder, should the Wyrd go closer to the computer or closer to the DAC? I have one short USB cable and one longer one. I can either put the Wyrd by the computer, or by the DAC, not sure which is better? 
 
Aug 12, 2015 at 9:12 AM Post #445 of 578
Since it re locks the signal from the computer I'd use the short cable to connect the day to the wyrd
 
Aug 12, 2015 at 10:58 AM Post #446 of 578
Aug 12, 2015 at 12:47 PM Post #447 of 578
These work finely for this purpose IME:
 
http://www.amazon.com/Lindy-0-2m-USB-Cable-Transparent/dp/B004CDVOOC/
 
http://www.amazon.com/Lindy-0-2m-Cable-Transparent-31688/dp/B004CDXGBG/
 
Aug 13, 2015 at 6:24 PM Post #448 of 578
So, is the ~ 2w of vampire draw on the AC wall wort normal? It draws that much even of the Wyrd and all devices are off. 
 
Aug 14, 2015 at 9:33 AM Post #450 of 578
oklahoma said:
Yes. It is a non switching power supply so that means it is always on and the only way to turn it off is to unplug it.
Click to expand...


I wonder if there's any harm in putting it on a switch and cutting it off when not in use?
 
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