Head-Fi.org › Forums › Equipment Forums › Computer Audio › Asus Essence One Headphone Amp/DAC (CeBIT 2011)
New Posts  All Forums:Forum Nav:

Asus Essence One Headphone Amp/DAC (CeBIT 2011) - Page 83

post #1231 of 3014
Quote:
Originally Posted by cssarrow View Post

Agree with you 100%. The "sss" comes from vocals that sings/says any word that starts or ends with an "s".

EQ is also a last resort for me, thus i chose to ignore those certain songs. When the volume is lower, the squeal is no longer fatiguing. 

 

Glad the new cable is working out for you, just be careful about the heat of the op-amps. 

 

Tim


Thanks for the advice.

Yes, I will have an eye on the temperature. So far I can tell, the opamps are very warm but I think thats still in range. However, the coil is hot. The case is just about warm though. nothing to fear just yet I guess.

post #1232 of 3014
Quote:
Originally Posted by DMarasovic View Post


This usually happens when polarized capacitors are connected wrong way - opposite polarity or too high voltage.

I mounted the capacitors in the same direction and have since tested the same rated capacitors for an hour a piece. Seems I just got a couple dud capacitors.

post #1233 of 3014

Hey guys, maybe I missed something in these 83 pages...  But I was wondering what is going on with the upsampling function?

 

I've been measuring the XONAR E1 over the last few days with RightMark, and have noticed some really odd behaviour.

 

With the newest firmware and Win 8 drivers (8.0.11.6 / 1.27 / 0111), this is the frequency response at 16/44 with & without upsampling using the USB interface:

 

 

Looks good!

 

Okay, now check the TosLink & Coaxial inputs at 16/44:

 

 

Wow! With the upsampling button on, the frequency drops off in a big way by 15kHz on both TosLink and Coaxial digital inputs for some reason!

 

Lets now check out USB 24/96:

 

 

Again, premature drop off in frequencies with upsampling turned on; this time at ~25kHz which arguably is inaudible at least...

 

ASUS: Can you discuss what kind of algorithm is being used when upsampling is turned on? Some kind of minimum phase filter upsampling for example could be very interesting!  I think it's fair to say that the drop-offs in the TosLink and Coaxial at 16/44 are "bugs" since this would be audible (maybe the engineers over there should check 24/96 and other sampling rates also)!  As for the drop off with USB 24/96, is this intended?


Edited by Archimago - 1/30/13 at 9:55pm
post #1234 of 3014

Great find Arch.

post #1235 of 3014

Yes this has been postet on the asus forum many monts ago, i never use upsampling because even on usb with 44,1khz the drop in treble is very audible. So for me upsampling sounded always worse.

post #1236 of 3014
Quote:
Originally Posted by Whit3Rav3n View Post

Yes this has been postet on the asus forum many monts ago, i never use upsampling because even on usb with 44,1khz the drop in treble is very audible. So for me upsampling sounded always worse.

I notice the treble getting cut as well. Makes the sound less pronounced, which is no good.

post #1237 of 3014

Anyway i´ve been using the ad797br in i/v and 49720ha in lpf and buffer for a while but this combination is still not optimal. It has a very good soundstage and clean sound but it sounds a bit thin and treble heavy. I am still waiting for adapters so i can test the opa827 and the 49990. Maybe there is a better combination with them.

post #1238 of 3014
Quote:
Originally Posted by Whit3Rav3n View Post

Anyway i´ve been using the ad797br in i/v and 49720ha in lpf and buffer for a while but this combination is still not optimal. It has a very good soundstage and clean sound but it sounds a bit thin and treble heavy. I am still waiting for adapters so i can test the opa827 and the 49990. Maybe there is a better combination with them.


As I have posted before, the best sound balance (for my ears) is with AD797br in i/v and LM4562 in lpf.  49720ha's are at output buffers, and yes, they are little too bright at lpf.

post #1239 of 3014
Quote:
Originally Posted by Whit3Rav3n View Post

Yes this has been postet on the asus forum many monts ago, i never use upsampling because even on usb with 44,1khz the drop in treble is very audible. So for me upsampling sounded always worse.

 

I remember talk of the drop off with USB at 16/44 months ago and it obviously looks like they fixed that, BUT neglected to fix it for the TosLink & coaxial digital inputs!

 

Also, it would be nice to get an idea what's going on with 24/96 as well...  What kind of upsampler also acts as a low-pass filter?


Edited by Archimago - 1/31/13 at 5:47pm
post #1240 of 3014

Sorry for a lil sidetrack here.. Has anyone here got a chance to test out woo audio's wa22 with hd800s? If so, how does it compare to the E1 Muses edition? Or in general, how does E1 muses edition compare to a high end tube amp (considering its driven by a good dac)?

post #1241 of 3014

Just toying around with my Essence One.

 

Decided to change up the LED's, as working in the computer industry for so long, i grew a nature to hating the color blue.

 

ToSlink/Coaxial/USB LED changed to Red/White

Up-sampling LED changed to White

Bit-Perfect LED changed to Ultraviolet

44.1 to 192 LED changed to Red

Power Button LED changed to Red (Stock: 2.68V @ 3mA w/ 751Ω resistor)

 

Will soon make a small 5V (Measured 4.95V) circuit to make Power Button LED have a "Glowing/Fade" Effect.

 

 

 

 

 

Tim


Edited by cssarrow - 2/1/13 at 2:28am
post #1242 of 3014
Well I have the original asus essence one.
Now decided to replace op amp.
How many muses 01 i have to bougth consedering I don t use the headphone section?
Six? In this way I have the same muses config ?
Thanks for
post #1243 of 3014
Quote:
Originally Posted by LSD25 View Post

Sorry for a lil sidetrack here.. Has anyone here got a chance to test out woo audio's wa22 with hd800s? If so, how does it compare to the E1 Muses edition? Or in general, how does E1 muses edition compare to a high end tube amp (considering its driven by a good dac)?

Not that I have heard wa22 or E1 muse edition as "yet" I have heard woo audio's wa6-SE feed by E1 standard edition, it was just amazing very vinyl sounding in comparison to the E1 by itself.  However this was with my Fostex TH900 and friends LCD2 v2.  If a tube amp is what you are looking for your HD800 I would suggest as many head-fier would also, Eddie Current's, Zana Deux SE tube amp, some say it makes for the best pairing, and its around the same price as wa22.

post #1244 of 3014

Tim or anyone else, do you happen to know where I can find simple DIP8->DIP8 "sockets, so I can place that socket on top of the existing socket of the E1 as a backup?

 

I've had some trouble just a few minutes ago... I wanted to remove one of the stock NE5532 opamps. Unfortunately, one of those "noses" broke during the process. That means, one half got stuck inside the soldered socket hole... T_T

 

It was a real pain...however, after an hour of trying to get that tiny little thing out of that hole (I had to turn the E1 upside down and fiddle around with a tiny needle), I managed to get it out.

So to prevent this from happening again I would like to buy another socket just to place it on top of the soldered, original one as a backup.

May I ask what the excact name for it is and where I could buy some of them? - Best some shop that ships to Europe.

 

If I look it up (DIP 8 adapter or socket), all I find are dozens of pages of stuff I'm not looking for :(

 

Any help is much appreciated!

 

Update:

Hmm guys, I found something: http://www.digikey.com/scripts/dksearch/dksus.dll?FV=fff40016%2Cfff8049c%2C2dc0905&k=ic+socket&vendor=0&mnonly=0&newproducts=0&ptm=0&fid=0&quantity=0&PV571=286

 

or maybe: http://uk.rs-online.com/web/p/dil-sockets/7185155/ ?

Do you think that is the correct one? It looks like it :O


Edited by Kenion - 2/1/13 at 9:02am
post #1245 of 3014

Considering I use only XLR output and headphone, what free sample opamps should I get from TI to start playing with opamp rolls ?

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Computer Audio
Head-Fi.org › Forums › Equipment Forums › Computer Audio › Asus Essence One Headphone Amp/DAC (CeBIT 2011)