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A Motherboard with usb dac's in mind - Page 2

post #16 of 20
Quote:
Originally Posted by ToddTheMetalGod View Post
 


It would probably be better if they designed it to draw power straight from the power supply. I mean, drawing power from the board sort of defeats the purpose of having a dedicated USB port card. There's only so much that can be done through power filtering. Then again, I've never even heard the noise floor on my USB DAC and I'm not too obsessive so I wouldn't really be interested in a product like this.


Wouldn't it be possible to use a DC-DC converter to drop the 12v supply to 5v with a noticeable improvement in noise rather than filtering the 5v?  My PC is noisy, I can hear my mouse and any scroll on a white webpage through a battery powered DAC and amp while using the USB connection (only during quiet parts of a song) so I'm trying to research these cards between Christmas obligations - progress is slow!

post #17 of 20
Quote:
Originally Posted by suicidal_orange View Post
 


Wouldn't it be possible to use a DC-DC converter to drop the 12v supply to 5v with a noticeable improvement in noise rather than filtering the 5v?  My PC is noisy, I can hear my mouse and any scroll on a white webpage through a battery powered DAC and amp while using the USB connection (only during quiet parts of a song) so I'm trying to research these cards between Christmas obligations - progress is slow!


I'm not sure to be honest. Perhaps the best solution would be to just get a higher quality power supply and motherboard? I've personally never had a problem with noise, but I'm into performance computers so I would just expect my components to have an inaudible amount. Back when I used to have an ASUS Xonar DGX (an unshielded PCI-E soundcard) I would get noise if I used my graphics card that was above it at 100%. No problems with USB DACs though. I've heard of many people on Head-Fi having the same problem with noise when scrolling, perhaps it's a grounding issue with your USB bus?

post #18 of 20
Quote:
Originally Posted by ToddTheMetalGod View Post
 


I'm not sure to be honest. Perhaps the best solution would be to just get a higher quality power supply and motherboard? I've personally never had a problem with noise, but I'm into performance computers so I would just expect my components to have an inaudible amount. Back when I used to have an ASUS Xonar DGX (an unshielded PCI-E soundcard) I would get noise if I used my graphics card that was above it at 100%. No problems with USB DACs though. I've heard of many people on Head-Fi having the same problem with noise when scrolling, perhaps it's a grounding issue with your USB bus?


While not new my computer's not exactly budget stuff - a lightly overclocked 2700K in an Asus P8Z68-V running off a 400W Seasonic PSU. I use the onboard graphics and only one "real" HD so don't MOAR POWER! as the kids of today may think; the PSU can cope with full load which it rarely sees. 

 

The noise happens at any time when I scroll a white background, even if there is no other load. If I have no headphones I can hear my actual monitor squeaking more (it has a constant PSU whine but was under warranty until Christmas - I'll be opening it up for some hot glue treatment soon) or if I have headphones it comes through them.  You make a good point about ground - I'll have to investigate what happens when turning the monitor off!  Thanks for the idea :normal_smile : 


Edited by suicidal_orange - 12/27/13 at 1:53am
post #19 of 20

Has anyone tried GIGABYTE H81.AMP-UP motherboard?  Does it improof sonic quality to external DAC?

 

This is a mainstream price motherboard with interesting features for audiophile...

 

- USB DAC-UP takes advantage of an isolated power source that minimizes potential fluctuations, ensuring the best audio experience possible.

- GIGABYTE USB DAC-UP also allows the port to be configured in BIOS for enthusiast system configurations which do not require USB power to the DAC.

- Upgradable Onboard OP-Amp.

 

Thanks.

post #20 of 20

Great share....

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