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[Official] Creative Sound Blaster Z, Zx & ZxR Series Club - Page 451

post #4501 of 5587
Quote:
Originally Posted by Stealth3si View Post

Does the audio sound fine when double amping the Z's headphone out using an external amp (like the O2) with a low impedance headphone (i.e., 25-ohms Denon AH-D7000)?

Thx!

It would sound fine provided you keep the output from the card at a low volume (10-25%), but why would you...?

A better alternative may be to use the toslink output with stereo mix (or dolby/dts if supported), assuming the headphone amp in question has a toslink DAC inside it.
   
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post #4502 of 5587
Quote:
Originally Posted by Paul17041993 View Post

It would sound fine provided you keep the output from the card at a low volume (10-25%)
no problemo thumb.gif Just curious, what amp and headphone did you use to double amp the Z?
Quote:
Originally Posted by Paul17041993 View Post

but why would you...?

A better alternative may be to use the toslink output with stereo mix (or dolby/dts if supported), assuming the headphone amp in question has a toslink DAC inside it.
Because I'm connecting the toslink out to my HT. wink.gif
Edited by Stealth3si - 7/27/16 at 6:23am
post #4503 of 5587
Quote:
Originally Posted by Stealth3si View Post

Does the audio sound fine when double amping the Z's headphone out using an external amp (like the O2) with a low impedance headphone (i.e., 25-ohms Denon AH-D7000)?

Thx!

Yes, i use this atm, and i also measured it in RMAA(with the headphone load), and it measures better in some departments, compared to going through optical out to my external DAC -> O2.
Not that i could tell it apart in A/B anyway, once the O2 takes care of the output impedance, where even onboard -> O2 would make this a hard task. smile.gif
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post #4504 of 5587
Quote:
Originally Posted by Stealth3si View Post

Just curious, what amp and headphone did you use to double amp the Z?

I don't, because the internal amp powers my cans (ATH-M50X) just fine and via the ACM (Zx). Basically the only difference between a line and amp output is the power range, line is fixed or has a low peak power, whereas amp-ed can be much higher. So when connecting a line in to an amp out you just have to make sure the amp out doesn't feed too much power and cause the end device to clip (pro equipment tends to have a gain control on each input to help with this).
   
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post #4505 of 5587
Quote:
Originally Posted by thuNDa View Post

Yes, i use this atm, and i also measured it in RMAA(with the headphone load), and it measures better in some departments, compared to going through optical out to my external DAC -> O2.
Not that i could tell it apart in A/B anyway, once the O2 takes care of the output impedance, where even onboard -> O2 would make this a hard task. smile.gif
and you are using a 25 ohm headphone?
post #4506 of 5587
Quote:
Originally Posted by Stealth3si View Post

and you are using a 25 ohm headphone?

no, and it seems that you wouldn't even need an amp with low output impedance for your denons:

http://graphs.headphone.com/graphCompare.php?graphType=7&graphID[]=283&scale=30
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post #4507 of 5587
Quote:
Originally Posted by thuNDa View Post

no, and it seems that you wouldn't even need an amp with low output impedance for your denons:

http://graphs.headphone.com/graphCompare.php?graphType=7&graphID[]=283&scale=30
what about the 1/8th rule?
Edited by Stealth3si - 7/27/16 at 2:46pm
post #4508 of 5587
Quote:
Originally Posted by Stealth3si View Post

are you not forgetting the 1/8th rule?

the graph shows, that it doesn't apply to your headphones.

If it would, the graph would look like this(not following 1/8 rule = boosting at 100hz in this case):

http://graphs.headphone.com/graphCompare.php?graphType=7&graphID[]=2851&scale=30
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post #4509 of 5587
Quote:
Originally Posted by thuNDa View Post

the graph shows, that it doesn't apply to your headphones.

If it would, the graph would look like this(not following 1/8 rule = boosting at 100hz in this case):

http://graphs.headphone.com/graphCompare.php?graphType=7&graphID[]=2851&scale=30
yes i see, you are right. A low output impedance amp that is 1/8th of the impedance of my Denon is not needed, but I think ideally it should be used.
Edited by Stealth3si - 7/27/16 at 3:51pm
post #4510 of 5587
Quote:
Originally Posted by Stealth3si View Post

yes i see, you are right. A low output impedance amp that is 1/8th of the impedance of my Denon is not needed, but I think ideally it should be used.

Well, you already have the 0.5 Ohm O/I "O2" - what do you want more then? tongue.gif
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