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ASUS Xonar Essence STX II
Feb 27, 2016 at 11:14 PM Post #426 of 888
Originally Posted by Renfield1217 /img/forum/go_quote.gif
 
....I just upgraded my buffer opamps from OPA637's to the Sparkos SS3602. I use my STX II mostly for the stereo line out to feed my main stereo and for some streaming.
The Sparkos are excellent and highly recommended.
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Thanks for the confirmation on the Sparkos® SS3602, the best-performing upgrade candidate for my STX' I-V.  Incidentally, I've looked over the Signetics® NE5532 flavors (a dozen-plus from the OEM!), which seem to have all sort of second-source competition from Philips®, Texas Instruments®, Japan Radio Corporation, &c., as candidates for the line-level buffer.  Anybody done chip-rolling with 5532's on an Essence; and if so, which one sounded best of the candidates used?
 
Feb 28, 2016 at 9:43 PM Post #428 of 888
Cost mitigation, as the SS3602 is high bid for op-amp improvements and I've a tight upgrade budget; the NE5532 is reported as smoother than the stock National Semiconductor/Texas Instruments LM45672AN for the line-level buffer in specific while reasonably low in cost.
 
Feb 29, 2016 at 1:25 AM Post #429 of 888
paulguru said:
  Excuse me 
Anyone ever tryed this card with the HiFiman HE400S ?
Can this card drive 400S greatly ?
The volume is not too high ( al so with minimum gain ) ?
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help  
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Mar 6, 2016 at 1:20 PM Post #431 of 888
Hello,
 
I previously owned a Xonar D2/PM and was very happy with it. Didn't use headphones before. But later I decided to buy a Sennheiser HD650. As the D2 would not be enough to feed the HD650, I decided to upgrade my soundcard and bought a STX II
 
However, I am not happy with it. The sound is muddy, not clean and warm enough. It is the same with headphones and speakers.
 
When I connect HD650 to my Note5 smartphone I am getting the clean and warm sound I am looking for. It sounds as it should be. I read lots of positive reviews before buying the STX II so I believe it should not sound so bad. 
 
I have not changed anything except the soundcard, hardware or software wise. Using Jriver with asio as I used to.
 
Do you have any ideas what might be wrong?
 
Thanks.
 
Mar 6, 2016 at 4:01 PM Post #432 of 888
estranged said:
  Hello,
 
I previously owned a Xonar D2/PM and was very happy with it. Didn't use headphones before. But later I decided to buy a Sennheiser HD650. As the D2 would not be enough to feed the HD650, I decided to upgrade my soundcard and bought a STX II
 
However, I am not happy with it. The sound is muddy, not clean and warm enough. It is the same with headphones and speakers.
 
When I connect HD650 to my Note5 smartphone I am getting the clean and warm sound I am looking for. It sounds as it should be. I read lots of positive reviews before buying the STX II so I believe it should not sound so bad. 
 
I have not changed anything except the soundcard, hardware or software wise. Using Jriver with asio as I used to.
 
Do you have any ideas what might be wrong?
 
Thanks.
Click to expand...

Could be a driver problem, what operating system do you use?
 
I highly recommend using UNi Xonar Drivers.
 
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