USB cable really improves?

Hello everyone,

At first, I was a skeptic like you and did not think USB cables made any difference at all to the sound. After all, digital is digital and 1 is a 1 and 0 is a 0, if my files transfer to the hard disk without a single bit error, why would my audio file not get to the DAC with all the bits intact? Like many of those critics I have a technical background as well. But one day by accident, I swapped the USB cable connected to my DAC, and immediately heard something was wrong. I thought my DAC or amp was bad because it lost all dynamics and was so lifeless, but nothing else was changed. I swapped the original cable back and everything was fine again. By that point I was convinced. Originally I had always just used the USB cable from a portable harddrive, but at that moment, I was using the harddrive so I just took another USB cable from a cheap dollar-store USB hub, and those two cables are obviously built differently. They were similar in length. Finally I bought a proper USB cable from an audio brand and was happy.

In developing the Lautus USB Audio Cable we looked at the FIFO delay and decided it couldn't be used as an against argument, why?

Data still hits the FIFO (first in first out) buffer input in real time, and the USB protocol controller before it.

What the layman doesn't realise is the logical ones and noughts have a fast transition between them, otherwise there would be more than ones and noughts, and that puts a logic gate into a bit of a predicament.

The rise and fall time between 0 and 1 and 1 and 0 obviously needs to be fast - there is no such thing as half! There are however, propagation delays which make the transition slope. Propagation delays are responsible for errors! What is half? The input has to decide if it's a 1 or a 0 and it has no human reasoning, it just does it - right or wrong.

So then the data enters the FIFO, and then the data exits the FIFO. So error data - 1's that have become 0's and 0's that have become 1's are still error data!

That error data is then converted to S/PDIF or analogue and it's still in error.

So what's the cable got to do with it? Here we go again - maybe somebody listens this time?

Cables have capacitance, that capacitance has a "quality" for remembering some part of its charge. Forget resistance, we're talking about CMOS inputs which are very high resistance and you can stick in series resistance and it makes no difference to rise and fall times, so forget all this OFC nonsense!

USB audio data is high speed. Printer data is generally low speed so the cable doesn't matter. Hitch a USB cable from a printer to a PC and see how often it fails to recognise it. Hitch a high speed device like a USB DAC to a PC and see how many times it fails to recognise. Something to do with cable capacitance?

OK, we covered capacitance, but what about other sources of 0/1 corruption? What about RF field strength? Can it be conceived that some radio signal modulation on the data may phase step some data? At an extreme we'd get 0's and 1's inverting, but more than likely we'd get transition edges that are blurred. So how is that blurring going to affect the data?

Better to prevent it? And we can demonstrate that the Lautus does all it promises.

Graham

Sounds very convincing to any cable sceptics out there (not me, I'm a convert )...now all we need to know is when will the Lautus USB cable be available?