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Question About Digital Output From Omega Claro II Sound Card

post #1 of 7
Thread Starter 

I just bought a new stereo amp which has digital inputs (Harman Kardon HK 990).  This amp's DACs will accept input from 24 bit 192 KHz sources.  I tried connecting this amp to my music server PC via the motherboard toslink connector.  The PC has no add-on sound card installed.  The computer is configured to render bit perfect output, but when I attempt to play any music files with a sample rate over 48KHz, there is silence.  All 16 bit 44100KHz files sound glorious.  Changing the toslink cable made no difference.  I'm willing to wager that this is a PC issue, and not an amp problem, so I'm going to buy a sound card for the PC in hopes that it's digital interface will fix the problem.  I was thinking about purchasing an Omega Claro II card, but since this new sound card's analog outputs will never be used, can I get the same results with a cheaper card?  Are all digital outputs equal?  I understand that a sound card's DAC and analog circuitry defines the card, but does a more expensive card have advantages from a digital perspective?  Thanks for your insight on this issue.


Edited by DanoRoo - 1/26/14 at 10:20am
post #2 of 7
Sounds like maybe your motherboard audio doesn't actually support above 16 bit 44100KHz over optical. Hard to know.

And in answer to your question, yes. There's not really any advantage going with an expensive card if you can find a cheaper card that supports the bit rate and sampling rate you want via optical out. To save a little money, look into the Asus Xonar DX or D1. The specs say 192 KHz 24 bit, but make certain it supports that via optical out. I think it should, but I don't know for certain.
post #3 of 7
Quote:
Originally Posted by DanoRoo View Post
 

I just bought a new stereo amp which has digital inputs (Harman Kardon HK 990).  This amp's DACs will accept input from 24 bit 192 KHz sources.  I tried connecting this amp to my music server PC via the motherboard toslink connector.  The PC has no add-on sound card installed.  The computer is configured to render bit perfect output, but when I attempt to play any music files with a sample rate over 48KHz, there is silence.  All 16 bit 44100KHz files sound glorious.  Changing the toslink cable made no difference.  I'm willing to wager that this is a PC issue, and not an amp problem, so I'm going to buy a sound card for the PC in hopes that it's digital interface will fix the problem.  I was thinking about purchasing an Omega Claro II card, but since this new sound card's analog outputs will never be used, can I get the same results with a cheaper card?  Are all digital outputs equal?  I understand that a sound card's DAC and analog circuitry defines the card, but does a more expensive card have advantages from a digital perspective?  Thanks for your insight on this issue.

First off you might update to the latest audio drivers for your motherboard.

Then check the audio setting in the "Sound" section in the Windows Control Panel.

Make sure all the sample rates are enable for the S/PDIF output (Supported Format tab)

Also make sure you do not have DDL (Dolby Digital live) or DTS-Connect enable, if you have those features, in the on-board audio.

 

If you still need to get a sound card, for optical output.

Asus Xonar DG/DGX support 24-Bit/96k

Asus Xonar DS/DSG/DX/D1 support 24-bit/192k

post #4 of 7
Thread Starter 

Thanks for your input guys.   You both mentioned xonar cards as a possible solution and low and behold, I just happened to have a xonar D1 sitting in a rig I'm not using.  I didn't consider it because I had forgotten about the toslink adapter that came with it.  So, I pulled the card, grabbed the adapter (saving boxes can be a good thing),  and in 10 minutes I had awesome 24 bit 192 KHz music flowing from my loudspeakers.  Thanks for reminding me that the D1 did in fact have an optical interface.  Cheers!

post #5 of 7
That's awesome! Definitely no reason to buy the Claro smily_headphones1.gif
post #6 of 7
Quote:
Originally Posted by DanoRoo View Post
 

Thanks for your input guys.   You both mentioned xonar cards as a possible solution and low and behold, I just happened to have a xonar D1 sitting in a rig I'm not using.  I didn't consider it because I had forgotten about the toslink adapter that came with it.  So, I pulled the card, grabbed the adapter (saving boxes can be a good thing),  and in 10 minutes I had awesome 24 bit 192 KHz music flowing from my loudspeakers.  Thanks for reminding me that the D1 did in fact have an optical interface.  Cheers!

Hopefully you disable the motherboard's on-board audio, in the BIOS, when you installed the Xonar D1.

post #7 of 7
Thread Starter 
Quote:
Originally Posted by PurpleAngel View Post
 

Hopefully you disable the motherboard's on-board audio, in the BIOS, when you installed the Xonar D1.


Yes I did.  And, thanks again for your assistance.

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