Computer Upgrade

Kijanki,
Do some research on packet noise and you will see that reclocking is not the perfect answer. It helps if the clock is really stable but that can vary even in real expensive dacs. The Uptone Audio Regen is a device design to reduce packet noise which is generated by the dac reclocking
Alan

Yes, you might find some USB port noise sensitivity in some DACs:

http://archimago.blogspot.com/2015/05/measurements-usb-hubs-and-8khz-phy.html

..and he finds one DAC in certain setting producing artifacts of noisy USB HUB but the same time he states that he had never seen this before:

Okay, to end off... Let me remind everyone one more time that what I'm measuring with the 8kHz noise here is because of the Emotiva XSP-1's sensitivity to noise through the "Home Theater Bypass" input. The 8kHz tone is NOT something I have ever heard / measured coming out of a reputable DAC's analogue outputs! Nor is it something that's found in Stereophile USB DAC measurements. If it were not for this noise sensitivity, I would not even have bothered with looking at ways to attenuate the computer USB noise. Nonetheless, I think this is an interesting real-life demonstration of the noise pollution that can come out of the computer's USB port and a solution that works reasonably well. I did not bother with jitter tests this time as I have never seen the Dunn J-Test change in any substantial fashion with the use of a hub with an asynchronous DAC (see the measurements last time). Think you have a jitter issue? Save up the cash and buy a better asynchronous USB DAC - forget cables and tweak products IMO.

Last sentence is exactly what I'm saying. Also look at Stereophile test of, for instance, Ayre QB-9 especially jitter test (Fig. 14).
http://www.stereophile.com/content/ayre-acoustics-qb-9-usb-dac-measurements#rgvqgdT0kSAdPz8x.97

It shows no effect of jitter down to -125dB and the only visible jitter artifacts below that are from 120Hz switching noise of linear power supply (120Hz spaced sidebands). This could be fixed by using high quality SMPS. DacMagic behaved poorly in this test.

Coupled noise is usually a common mode that can be effectively defeated by even such simple devices like comment mode chokes. You can optimize your system running USB thru quiet Hub (faster computer will make it worse) but the proper thing to do is to find better DAC.

It should be "common mode chokes" - my spellchecker plays
games with me.

Its not just jitter. Tough to explain but very easy to listen for. You will just not get the easy going emotion from the sound youre suposed to get. USB is the worse interface you can use. Add a few grand in USB to spidf converters, cables, reclockers and you still have those crappy packets.

There is nothing else. If noise floor is low and the jitter is low then it is only matter of quality of the D/A converter and analog output section which is independent of the type of the DAC. It might be possibly lack of jitter since people are used to some noise or distortion and completely without them it sounds analytic, sterile, not engaging. It is pretty much like a difference between clean Jazz guitar and distorted guitar, Distorted always sounds livelier.