Originally Posted by nanaholic
But you don't open your mind so much that your brain falls out, which is what those USB cable makes a difference believers are doing as they are going against every scientific and engineering concept and laws which were used to build these things.
Here's a thought exercise for you - if USB cable makes a difference a lot of your computer accessories simply aren't working properly either. For example if we are to believe this claim that USB cable makes a difference, if you connect an external harddisk via USB using a "cheap" cable can you be sure that the data you are transferring is not untouched? Maybe that important accounting spreadsheet you've been working on has a bit flip and the number changed! Think of the implication of this claim for a second and come back to tell us why you still think the cable makes a difference, and then we can talk about being open minded or not.
Sorry... But have you looked at how USB audio is transferred? Transferring data from a HDD and transferring audio over USB use 2 completely different transfer protocols. One has error correction, the other doesn't, one is time sensitive, one is time insensitive, one has guaranteed retransmission, the other doesn't. Have a guess which one is which. I'm not sure how this goes against science and engineering concepts... Read below
Originally Posted by proton007
Of the two USB pins that transfer data (the other two for power), one needs to be <0.3V , the other >2.8V if its a 0, and reverse if its a 1. It doesn't care what type of signal it is, its all data.
Please explain what a cable will improve here.
Once you can establish a causation between the cable and this signal transfer, I'll consider your arguments of trying out different cables.
Okay, so here's an example. Let's say you have a cheap cable with less then adequate shielding between the data and power lines, It's a well know fact USB power from a computer is dirty (or are we going to deny this too?), what happens if you put these 4 lines together in a cable? Will they not interact and impact each other? What happens with the square wave that is being sent through the cable? Chances are the square wave won't look the same when it reaches an end point (your dac) as it did from your PC.
The digital signal is actually carried in an analog format represented as 1s and 0s, it's not some voodoo magic binary medium that is infallible to alteration.