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Need USB cable. Does USB cable make a differences - Page 3  

post #31 of 170

Copied from one of my posts:

"I haven't really read up much on anything hi-fi recently, but coming from a computer science backround (my major), I can say that a "better" usb cable won't do anything differently than a cheap usb cable. The data transmitted through the usb cable is digital and thus comprised of 1's and 0's. So it either works or it doesn't. There is no signal that can be degraded. Think about it. Can 1's get more or less one'y? This is the same reason why expensive hdmi cables are no better than $3 hdmi cables. If you want the hi-fi look, sleeve your cable and call it a day.

EDIT: I thought I'd clarify by one'y and why cables don't matter for digital. To a transistor, ones and zeros are represented by a voltage range. So for example a 0 would be represented by a signal that is 0v - .35v and a 1 would be represented by a signal that is .65v - 1v. These ranges are dependent on the physical characteristics of the transistors used, but you get the idea. As long as the voltages of your ones and zeros fall in those two ranges, you're good. Now unless you are getting massive interference, these fancy cables are nothing more than eye candy as a signal that is .65v is the registered the same as a signal that is 1v."

 

As for my credibility, while I may not have a degree (yet), I'm majoring in Computer Science at an accredited university and have just learned this in the Digital Logic class I took just last semester. Take it how you please.


Edited by NAWilson9 - 7/29/13 at 4:33pm
post #32 of 170
Quote:
Originally Posted by WALL-E View Post

 

I've even seen usb cables of length of 15M handles high speed 1200 Mbps!
high/full speed cable is determined by the attenuation and propagation delay, the max total one way signal propagation delay allowed is 30ns(26 ns delay from connector A to B + max 4ns in split between host and receiver) The maximum cable length is 5 meters anything longer starts to cause problems due to propagation delays right?
How can explain that 12M cable I did worked fine with my asynch Burson Conductor streaming 24/192 without even single glitch or dropouts (no usb active repeaters or extenders was used)?
My understanding is that the receiver buffer size plays a big role, am I right?

High-speed is 480 Mbps.

 

As I mentioned before, it's probably an active cable. Those don't necessarily look much different than normal cables but are usually more expensive (5 to 25 € depending on length). USB 2.0 allows about 30m total cable length by connecting 5m cables with several hubs. Think of active cables likes 1-port hubs integrated into the cable.

 

(Personally, I wouldn't choose USB for such "long" distances or would try to re-arrange the hardware.)


Edited by xnor - 7/29/13 at 4:38pm
post #33 of 170
Quote:
Originally Posted by xnor View Post

High-speed is 480 Mbps.

 

As I mentioned before, it's probably an active cable. Those don't necessarily look much different than normal cables but are usually more expensive (5 to 25 € depending on length). USB 2.0 allows about 30m total cable length by connecting 5m cables with several hubs. Think of active cables likes 1-port hubs integrated into the cable.

 

(Personally, I wouldn't choose USB for such "long" distances or would try to re-arrange the hardware.)

 

 

From all indications in the specs, this is not an active cable.


http://www.futureshop.co.uk/furutech-gt2-type-a-to-type-a-usb-cable-10m-p-6096.html

post #34 of 170
Quote:
Originally Posted by Fork View Post

 

 

From all indications in the specs, this is not an active cable.


http://www.futureshop.co.uk/furutech-gt2-type-a-to-type-a-usb-cable-10m-p-6096.html

 

from the description

 

Quote:
As with the more highly specified GT3, the cable wrap includes damping and insulating materials keeping mechanical ringing from affecting the sound. A carefully engineered clamp improves grip and keeps both mechanical and electrical distortion at bay.

 

In a USB cable, mechanical ringing/distortion is pure nonsense.

 

At least the cable looks expensive!

 

Cheers

post #35 of 170
Quote:
Originally Posted by ab initio View Post

At least the cable looks expensive!

To me it looks just very blue. Imho not the best color for a cable.

 

But anyway, the plug's shell seems big enough to house some electronics but maybe these blue boxes are just empty?

On their homepage they say that cable is available in length: 0.6, ... 5.0m. Not a mention of anything >5m.

 

 

As for the "features" and specification:

- Wire insulation is the same as mentioned in the USB spec, it is nothing special besides the very blue color

- The "3-layer shield for improved noise isolation" is in the spec as well, so nothing special

- Gold plated connectors can be found on MUCH more inexpensive (read: reasonably prized) cables as well

- Their power wire uses the middle ground AWG, so not as thin as possible but also not as thick as in the spec

- Their signal wires seem to be too thin (0.127 mm^2 = AWG 29), spec requires AWG 28

- Except for their "alpha" material, which could be anything really, all the other materials seem to be in line with the spec

 

Maybe some of the differences people hear are due to transmission errors by using cables that violate the spec?


Edited by xnor - 7/30/13 at 3:52am
post #36 of 170
I was using an inexpensive all copper Pangea USB cable in my system (2013 Mac mini to Schiit Gungnir -listening with LCD-3s). Around 3 months ago on a lark I got the chance to try a super expensive AudioQuest Diamond USB. I bought it.

Sorry to be contrary others' honest opinions here, but all USBs do not sound the same. Some are better than others. In the case of the AudioQuest Diamond, quite a bit better than the Pangea. Can't explain it, but I sure heard it for myself. And I would much rather not have heard it and saved the cost.
post #37 of 170
Quote:
Originally Posted by Jones Bob View Post

I was using an inexpensive all copper Pangea USB cable in my system (2013 Mac mini to Schiit Gungnir -listening with LCD-3s). Around 3 months ago on a lark I got the chance to try a super expensive AudioQuest Diamond USB. I bought it.

Sorry to be contrary others' honest opinions here, but all USBs do not sound the same. Some are better than others. In the case of the AudioQuest Diamond, quite a bit better than the Pangea. Can't explain it, but I sure heard it for myself. And I would much rather not have heard it and saved the cost.

 

And everything else in your system remained 100% identical?

post #38 of 170

It just doesn't make sense. Ones and Zeros are ones and zeros, and as long as the cable transmits a bit perfect digital signal, how can the "quality" of a USB cable affect the sound? 

post #39 of 170
Quote:
Originally Posted by Jones Bob View Post

I was using an inexpensive all copper Pangea USB cable in my system (2013 Mac mini to Schiit Gungnir -listening with LCD-3s). Around 3 months ago on a lark I got the chance to try a super expensive AudioQuest Diamond USB. I bought it.

Sorry to be contrary others' honest opinions here, but all USBs do not sound the same. Some are better than others. In the case of the AudioQuest Diamond, quite a bit better than the Pangea. Can't explain it, but I sure heard it for myself. And I would much rather not have heard it and saved the cost.

Agreed .... some people may have to hear it to believe it.

post #40 of 170

If your music sounds better with an expensive USB cable, then you are merely using it as a tone control. It is not objectively better.

post #41 of 170
Quote:
Originally Posted by whitedragon551 View Post

And everything else in your system remained 100% identical?

Yes. It is very easy to demonstrate.
post #42 of 170
Quote:
Originally Posted by Mortalcoil View Post

Agreed .... some people may have to hear it to believe it.

I got a grin when a skeptical EE from work came over and admitted hearing the difference.
post #43 of 170
Quote:
Originally Posted by jarrett View Post

If your music sounds better with an expensive USB cable, then you are merely using it as a tone control. It is not objectively better.

Never claimed it was. I was stating my opinion from experience.
Edited by Jones Bob - 7/30/13 at 6:25pm
post #44 of 170

http://www.cabledyne.com/usb-cable.html

this is one amazzzzing usb cable...anyone looking for an upgrade, check it out. 

30days return policy i believe. 

 

my own comments...neutral, alot more depth, v spatial, clean. gave me the wow factor.

( i tried LAT/Furutech/Wireworld..this one takes the cake for my ears )

 

==================================================================

 

ok back to u scientists/engineers/lecturers/computersciencestudents.

beerchug.gif

post #45 of 170
Quote:
Originally Posted by Jones Bob View Post

I was using an inexpensive all copper Pangea USB cable in my system (2013 Mac mini to Schiit Gungnir -listening with LCD-3s). Around 3 months ago on a lark I got the chance to try a super expensive AudioQuest Diamond USB. I bought it.

Sorry to be contrary others' honest opinions here, but all USBs do not sound the same. Some are better than others. In the case of the AudioQuest Diamond, quite a bit better than the Pangea. Can't explain it, but I sure heard it for myself. And I would much rather not have heard it and saved the cost.

Similar experience here.  Wasn't subtle.

 

Believe the "theory" and save yourself some $$$.   biggrin.gif

 

Or if you have the system, demo some higher end USB cables.  Not everyone's systems will benefit, but if yours does, you won't want to go back and your wallet will suffer.

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