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DAC and amp or Xonar STX - Page 4

post #46 of 63
Quote:
Originally Posted by 00MusicLover00 View Post

How would the STX's DAC compare with the E17's?

The Fiio E17 comes with the WM8740 DAC

The STX comes with the PCM1792A DAC.

I believe the PCM1792A is rated better then the WM8740.

But the E17's amplifier should be better then the STX with lower Ohm headphones (like the Denon AH-D2000 25-Ohm headphones).

post #47 of 63
Quote:
Originally Posted by 00MusicLover00 View Post

How would the STX's DAC compare with the E17's?

 

No measurements of the E17 are available, other than the fact that it uses the WM8740 chip (like the E7 and E10 as well), we only know these specs:

 

Specification

 

SNR:

   ≥109dB(A weight)[AMP];

   ≥104dB(A weight)[DAC]
Distortion:

   <0.001%(AMP);

   <0.007%(DAC)
Support sampling rate(Max):

   96K/24bit [USB] ;

   192K/24bit [SPDIF]
Frequency response:

   10Hz~100KHz[AMP];

   10Hz~20KHz[DAC]

 

These by themselves are not as good as the Xonar STX (or D1, DX, D2, or D2X, for that matter), but knowing more details and real data would be useful. Nevertheless, the DAC could very well be "good enough" in practice, and of course the E17 has a decent headphone amplifier with low output impedance (something that most if not all sound cards lack), and the advantages of USB/portability.


Edited by stv014 - 5/26/12 at 1:43pm
post #48 of 63
Quote:
Originally Posted by PurpleAngel View Post

The Fiio E17 comes with the WM8740 DAC

The STX comes with the PCM1792A DAC.

I believe the PCM1792A is rated better then the WM8740.

But the E17's amplifier should be better then the STX with lower Ohm headphones (like the Denon AH-D2000 25-Ohm headphones).

Using this as a measure of quality is pretty useless, I think this time the E17 should be the better(or more worth it considering its battery/bus powered) component given that Fiio has some engineering when it gets stuff right.

 

DAC wise I think that the STX still best the E17 in terms of measured performance though, the noise performance alone is -115db A weighted vs 104db. 

post #49 of 63
Quote:
Originally Posted by firev1 View Post

given that Fiio has some engineering when it gets stuff right.

 

What you mean by that exactly ?

post #50 of 63
Quote:
Originally Posted by stv014 View Post

 

What you mean by that exactly ?

They do get a few products right when they put effort into it, E5, E11,E7. Okay maybe engineering isn't the right word for it.

post #51 of 63

I was planning to use the STX for my PC, but now I think I'll just go for a usb dac. 

With the number of USB ports available on a motherboard today, there's no significant advantage in going for a sound card unless you want gaming/surround/dolby/recording features.

post #52 of 63
Quote:
Originally Posted by proton007 View Post

I was planning to use the STX for my PC, but now I think I'll just go for a usb dac. 

With the number of USB ports available on a motherboard today, there's no significant advantage in going for a sound card unless you want gaming/surround/dolby/recording features.

Bingo

Sent from my HTC HD2 using Tapatalk 2
post #53 of 63
If I were using mine for mainly music, with an external amp would one suggest the Stx still even with a dedicated external amp? Or would someone suggest a different modle to save a few dollars?is this a viable sound card if I wernt to utilize the.built in amp?would there be a sacrafice in quality if I were to get a different card?which card for the dt880 hd650?
post #54 of 63
Quote:
Originally Posted by Nodeity View Post

If I were using mine for mainly music, with an external amp would one suggest the Stx still even with a dedicated external amp? Or would someone suggest a different modle to save a few dollars?is this a viable sound card if I wernt to utilize the.built in amp?would there be a sacrafice in quality if I were to get a different card?which card for the dt880 hd650?

Still viable, its a good DAC, and gives you the technology. use the STx as a DAC and an external amp for the amp. 

 

The issue is you can't use dolby headphone with the line outs.... only with the Digital out and the headphone out. 

 

if you don't need the technology a good all in one alternative would be for example the Yulong D100. Have a read up.

post #55 of 63
Quote:
Originally Posted by WiR3D View Post

Still viable, its a good DAC, and gives you the technology. use the STx as a DAC and an external amp for the amp. 

 

The issue is you can't use dolby headphone with the line outs.... only with the Digital out and the headphone out. 

 

if you don't need the technology a good all in one alternative would be for example the Yulong D100. Have a read up.

Ty for the reply, Basicaly I'm looking for the best internal dac (200usd) for the computer (music), I'll be amping externally, I've read amping an amp is blasphemy ( is this only in case with a lesser dacs amplifying flaws? ) If I could save a few dollars on an card/dac to invest in a ext amp ill be doing so.would you still recommend the card? are the st and stx the same other than the slot? what are some recommended cards for 5.1 or 7.1? Could I run dual cards independently?I really don't want a receiver.

post #56 of 63
Quote:
Originally Posted by Nodeity View Post

Ty for the reply, Basicaly I'm looking for the best internal dac (200usd) for the computer (music), I'll be amping externally, I've read amping an amp is blasphemy ( is this only in case with a lesser dacs amplifying flaws? ) If I could save a few dollars on an card/dac to invest in a ext amp ill be doing so.would you still recommend the card? are the st and stx the same other than the slot? what are some recommended cards for 5.1 or 7.1? Could I run dual cards independently?I really don't want a receiver.

The ST is slightly better then the STX do to some "clock" feature.

I like the idea of getting a used ($50) Xonar DX or D1, close to the same features as the STX/ST, but missing the headphone amplifier.

Then you can buy any external headphone amplifier you budget allows.

post #57 of 63
Quote:
Originally Posted by Nodeity View Post

Ty for the reply, Basicaly I'm looking for the best internal dac (200usd) for the computer (music), I'll be amping externally, I've read amping an amp is blasphemy ( is this only in case with a lesser dacs amplifying flaws? ) If I could save a few dollars on an card/dac to invest in a ext amp ill be doing so.would you still recommend the card? are the st and stx the same other than the slot? what are some recommended cards for 5.1 or 7.1? Could I run dual cards independently?I really don't want a receiver.

ST is better, they have a dedicated line out so you won't be amping an amp. And with the ST you can get the H6 daughter board for 7.1 analog output.

 

The ST as a source/ DAC is still one of the best performing for the money, but I do recommend changing the opamps, the stock ones are crap.  

post #58 of 63
Quote:
Originally Posted by Nodeity View Post

Ty for the reply, Basicaly I'm looking for the best internal dac (200usd) for the computer (music), I'll be amping externally, I've read amping an amp is blasphemy ( is this only in case with a lesser dacs amplifying flaws? ) If I could save a few dollars on an card/dac to invest in a ext amp ill be doing so.would you still recommend the card? are the st and stx the same other than the slot? what are some recommended cards for 5.1 or 7.1? Could I run dual cards independently?I really don't want a receiver.

 

For 7.1 analog outs with Dolby technologies and no headphone amplifier, try the Xonar D1, DX, D2, or D2X. Using an external amplifier with these is not "double amping", as they have similar output stages as the ST/STX line outs, but with 1/8" jacks and fixed op amps. In the case of the D1/DX, the front channel jack has better quality than the others, which are still not bad, though.

You can (and I do, but under Linux) run more than one Xonar card in the same machine, but on Windows the Xonar Audio Center will apparently only recognize one card and ignore the others; maybe there is a way I did not find to choose the card to configure. However, you can still use any of them in applications where the developers bothered to make the audio device selectable, and for the others, set the Windows default audio output device as necessary.


Edited by stv014 - 8/23/12 at 5:21am
post #59 of 63

Some older STX headphone amplifier tests that may be relevant to this thread:

- with 22 Ω load on the front panel

- with 56 Ω load on the 1/4" jack (more detailed)

It is much better if the load impedance is in the hundreds of Ω range (see the Stereophile test), which is also recommended because of the noise and output impedance.

post #60 of 63
Quote:
Originally Posted by stv014 View Post

Some older STX headphone amplifier tests that may be relevant to this thread:

- with 22 Ω load on the front panel

- with 56 Ω load on the 1/4" jack (more detailed)

It is much better if the load impedance is in the hundreds of Ω range (see the Stereophile test), which is also recommended because of the noise and output impedance.

Ironic how some amps suffer as a result of an impedance mismatch. But then we already knew that. its just not expected from Solid State amps.

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