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Asus Essence One Headphone Amp/DAC (CeBIT 2011) - Page 184

post #2746 of 3016

Tried it. It still persists :(

post #2747 of 3016

in that case the noise is between the E1 and the downstream components somehow. Unlikely the noise changes if you remove all input connections correct?


Edited by ASUSXONAR - 11/14/13 at 2:44am
post #2748 of 3016

THe noise only comes when the computer is playing some sound. If i remove all inputs, there will be no sound and hence no noise.

 

There is humming only when there is noise. And only with rca outs, with headphone outs there is no noise. And the noise with rca outs is only if i go more than 9 o clock volume on the pot. I can keep the volume at any level with my other devices or pc though.

post #2749 of 3016
Quote:
Originally Posted by ASUSXONAR View Post
 

 

 

Coaxial is not optical. As I stated earlier try optical (AKA Toslink). There will be no difference between USB and "coaxial" if the noise is coming from the groundplane of the PC side. Toslink (optical) will break the ground connection which is why I suggested you try it. 

+1

post #2750 of 3016

It is a common mode problem. Resolved once I not use my hybrid am.

post #2751 of 3016
Quote:
Originally Posted by techboy View Post

It is a common mode problem. Resolved once I not use my hybrid am.

So you finaly found how to fix your issue? Could you please specify what is a "Hybrid AM" so others could know what to avoid.
 

Quote:
Originally Posted by Gandah View Post

Break off the power pin of your USB cable which your asus dac doesn't need or use, because it's self powered unit, which you can find tutorials on head-fi to do this.

This may or may not be the problem but at least you will know, and it doesn't effect the performance of the unit itself

Then why doesn't Asus ship their Essence One with such USB cable without the power pin?! For the price of the unit it wouldn't be too much asked. I wonder if it would have fixed the buzzing sound I had through my speakers "RCA Out" when I was moving a 1000Hz mouse.

 

Quote:
Originally Posted by ASUSXONAR View Post

Coaxial is not optical. As I stated earlier try optical (AKA Toslink). There will be no difference between USB and "coaxial" if the noise is coming from the groundplane of the PC side. Toslink (optical) will break the ground connection which is why I suggested you try it. 

So if you have the choice between Coaxial and Optical, always use the Optical since the quality is the same but it's less prone to grounding issues?

post #2752 of 3016
Hybrid amp.

With just the amp there is no hum. With just the muses there is no hum. With both together there is hum.

It is a grounding issue with my pcs psu.
post #2753 of 3016
Quote:
Originally Posted by PanzerIV View Post

 

Then why doesn't Asus ship their Essence One with such USB cable without the power pin?! For the price of the unit it wouldn't be too much asked. I wonder if it would have fixed the buzzing sound I had through my speakers "RCA Out" when I was moving a 1000Hz mouse.

As far as I know nobody makes USB cables without the power pin. Therefore it's unreasonable to expect them to make their own production run of cables without power pins just for the dacs in order to deal with a problem only a minority of users might experience.

post #2754 of 3016
Do you guys think the E3 will be worth getting?
post #2755 of 3016

You might find some answers here:

 

http://www.head-fi.org/t/686538/asus-launches-essence-iii-usb-dac-preamp-headamp

post #2756 of 3016

does anyone elses E1 get really quite hot after a few hours of use?

post #2757 of 3016
Quote:
Originally Posted by dclaz View Post
 

does anyone elses E1 get really quite hot after a few hours of use?

I've left mine on for a week plus before. Just warm to touch (You can leave your hand on the unit and you won't feel any discomfort)

post #2758 of 3016
Same here, mine doesn't get that hot at all
post #2759 of 3016

My issue got solved. Just placed the amp over the dac :)

post #2760 of 3016

that right,Looks like an external Dac/Amp combo with USB, Coax and Optical inputs.thanks

hDIQWz

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