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O2 AMP + ODAC - Page 128

post #1906 of 3666
Quote:
Originally Posted by conheo View Post

could you please provide the link to this masterpiece...

Here you go

http://www.amazon.com/Ravel-Piano-Concertos-etc-Thibaudet/dp/B0000042EU/ref=sr_1_2?ie=UTF8&qid=1390406694&sr=8-2&keywords=thibaudet+ravel

YouTube

http://m.youtube.com/watch?v=3vEKOCQPhQM
Edited by nabwong - 1/22/14 at 8:09am
post #1907 of 3666

I was reading this thread and saw many people saying that using a powered usb hub greatly enhances the sound of the ODAC.

 

could you recommend any usb hub powered up to $ 30.00 for use with ODAC?

 

Thanks :)

post #1908 of 3666
Quote:
Originally Posted by glunteer View Post
 

I was reading this thread and saw many people saying that using a powered usb hub greatly enhances the sound of the ODAC.

 

could you recommend any usb hub powered up to $ 30.00 for use with ODAC?

 

Thanks :)


Whaaaaat? Who was saying that?

post #1909 of 3666
Quote:
Originally Posted by BenF View Post
 


Whaaaaat? Who was saying that?

 

 
 
 
I saw some people here in the topic saying
post #1910 of 3666
Quote:
Originally Posted by glunteer View Post
 

 

 
 
 
I saw some people here in the topic saying


Can you find this?

post #1911 of 3666
Quote:
Originally Posted by BenF View Post
 


Can you find this?

 
 
 
I searched the smartphone yesterday ... I can not find here on my pc ...

You do not believe that will improve the sound?
post #1912 of 3666
Quote:
Originally Posted by glunteer View Post
 
 
 
 
I searched the smartphone yesterday ... I can not find here on my pc ...

You do not believe that will improve the sound?


No reason why it would.

I used to connect my DACs through a USB Hub (non-powered), it caused a lot of noise.

post #1913 of 3666
Quote:
Originally Posted by BenF View Post
 


No reason why it would.

I used to connect my DACs through a USB Hub (non-powered), it caused a lot of noise.

I may be wrong then ... however thanks for the help :)

post #1914 of 3666
I'm not sure about powered hubs, but some people find that if you have DAC that's powered entirely by USB, you can improve the sound by using a battery power supply and a cable splitter. For example, Anker batteries are batteries with USB ports used for charging phones. If you get a USB Y-splitter and block the pin that carries power on the plug that goes into your laptop, all the power to the DAC comes from the battery and not from the laptop. I do this with my USB DAC. It doesn't make much difference, really, but it depends on the particular DAC model as well as on the laptop.
post #1915 of 3666

Isolating the computer as a power source and substituting a decent low noise power supply, or battery, can improve the ODAC.   As not all computers are built equal your results may vary.

post #1916 of 3666
Quote:
Originally Posted by glunteer View Post
 

I may be wrong then ... however thanks for the help :)

Only way I can see the ODAC improving from a powered usb hub is if the usb port you are using on your computer/laptop does not provide sufficient power. I can't hear the difference between my laptop or pc or office pc (powered usb hub). Sorta like the whole cable debate. Your ears hear what you want it to hear imo. Just my two cents. 

post #1917 of 3666
Quote:
Originally Posted by mcandmar View Post
 

Isolating the computer as a power source and substituting a decent low noise power supply, or battery, can improve the ODAC.   As not all computers are built equal your results may vary.

TBH a well built power supply should be the cornerstone of any pc build.

post #1918 of 3666

I agree, but a decent PC power supply makes an awful supply for a DAC.  For example in the below image the top trace is a 5v linear regulator supply, the bottom is the power coming out of the USB port on my PC, which happens to have a Corsair AX850 power supply feeding an Asus Sabertooth x79 motherboard.  The real problem is the many sources of noise at various frequencies operating inside the computer.

 


Edited by mcandmar - 1/22/14 at 11:18am
post #1919 of 3666

Question: Are there measurements of sound output of the ODAC via different power sources to see the affects of usb power on dither and such?

post #1920 of 3666

Spend some time on the designers website and look at the design docs, spec and his plots.....

 

Alex

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