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Asus Essence One Headphone Amp/DAC (CeBIT 2011) - Page 115

post #1711 of 3076
Quote:
Originally Posted by endeeinn View Post

Does the volume control work?  If it works (vol up and down) the scratching sound may be the volume knob rubbing on the front panel, at least it sounds like that on your video.  Pull the knob out a bit until you don't hear the scratching.

Thank you, but this is a $1000 DAC/AMP, and I do not accept such bad quality, and why should I fix something that should be in working condition.

 

The first one I had, felt much better in comparison (the Knobs on the old model have more control).

 

I did not even bother to put my IEM , as I am really frustrated, so I do not know if the volume even works!

post #1712 of 3076

yes, pull it a tiny bit out and you'll be in business...it might have gotten pushed in during shipping for all we know wink_face.gif

post #1713 of 3076

What leeperry said is what i would have also tried first.

 

Give it a good yank towards yourself.

 

either that or the washer/bolt is screwed on wrong.

post #1714 of 3076
Quote:
Originally Posted by leeperry View Post

yes, pull it a tiny bit out and you'll be in business...it might have gotten pushed in during shipping for all we know wink_face.gif

I tried all this, but after looking at the volume knob , I find it to be off center to the right, where it is scratching:

 

I took a macro shot and saw evidence of the scratch:

 


Edited by turokrocks - 2/27/13 at 12:42pm
post #1715 of 3076

So when you turn the volume knob, that's the only area that seems to make contact?

post #1716 of 3076
Quote:
Originally Posted by cssarrow View Post

So when you turn the volume knob, that's the only area that seems to make contact?

Yes as  per this

 

post #1717 of 3076

Are you hearing the sound from the outside (next to the knob) or the inside?

If it's the inside, you're pretty much F@%K3d.

 

The outside would be an easier fix, as you just take out the knob and sand it down a little with some 400-800 grit, then 2000 to not have sharp lines.


I doubt you'll want to fix it, but it's a lot better than getting RMA. evil_smiley.gif

 

Tim

post #1718 of 3076
Quote:
Originally Posted by cssarrow View Post

Are you hearing the sound from the outside (next to the knob) or the inside?

If it's the inside, you're pretty much F@%K3d.

 

The outside would be an easier fix, as you just take out the knob and sand it down a little with some 400-800 grit, then 2000 to not have sharp lines.


I doubt you'll want to fix it, but it's a lot better than getting RMA. evil_smiley.gif

 

Tim

Definitely from the outside of the knob.

post #1719 of 3076
Quote:
Originally Posted by ASUSXONAR View Post

 

 

We have been looking into this. During development we were given a choice of four different filter options (not all at the same time obviously). The current filter was chosen and it favors high sampling rates (88KHz upwards), the side effect being the sharp cut-off for lower sampling rates.

 

We're working with the developer and discussing a new filter that is less aggressive at lower sampling rates. There are side effects to every choice, but we'll try and do something that is more universal.


Thanks for the response ASUSXONAR.

 

IMO, upsampling is by nature more important in the lower sampling rates. If anything, I think the algorithm should bias towards better sound with the 44/48 rates and generally try to leave the hi-res stuff alone. Furthermore, the fact that most digital music exist at 44kHz makes it imperative that these lower sampling rates should be optimized.

 

As I noted on my blog post, it looks like there's some really good engineering in the Essence One. ASUS has clearly been targeting the enthusiast market strongly with the MUSES and PLUS editions, so this oversampling result is disappointing. The hardware's there, so it would be great to see this blemish be repaired.

 

Hope to hear of changes soon!


Edited by Archimago - 2/27/13 at 11:37pm
post #1720 of 3076

I take it you are the same Archimago from DIYAUDIO looking for C-Media firmware for your S/PDIF>USB conv? Small world :)


Edited by ASUSXONAR - 2/28/13 at 2:04am
post #1721 of 3076

ASUSXONAR,

 

Can you tell us if a new filter option can be introduced via a firmware patch or is it likely to require an all new DSP chip at the manufacturing stage to overcome the up sampling roll off issue?

post #1722 of 3076

I know there is a bit of space restrictions but has anybody here attempted trying discrete opamps with the E1?

post #1723 of 3076

Firmware update.

 

Quote:
Originally Posted by daws0n View Post

ASUSXONAR,

 

Can you tell us if a new filter option can be introduced via a firmware patch or is it likely to require an all new DSP chip at the manufacturing stage to overcome the up sampling roll off issue?

post #1724 of 3076
Quote:
Originally Posted by ASUSXONAR View Post

Firmware update.

 

Good for those with earlier units.

post #1725 of 3076
Quote:
Originally Posted by ROBSCIX View Post

Good for those with earlier units.

 

Any unit - time is irrelevant on this one as the chipset used is the same throughout the range.

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