[zeromacro]

Quote:

Originally Posted by ROBSCIX /img/forum/go_quote.gif They are not "speaker outputs" they are line-level outputs. They are meant to be connected to a preamp or a power amplifer. You can drive some headphones straight form the output sure. You can still change the opamps even if you are using the line outs. All 3 can be changed when using the line outputs.

Thanks for answering my question. Having said that what opamps would you recommend to make the sound a lot warmer? It sounds way too harsh at the moment even though my amp is quite warm sounding (Meier Corda Headfive).

 

[leeperry]

Quote:

Originally Posted by zeromacro /img/forum/go_quote.gif I have the line-out of the STX fed to a Meier Corda Head five amp [..] the sound is way too harsh.

that's what a sub-par amp and an agressive digitis soundcard do...you could try getting a better amp and modding your card: http://www.head-fi.org/forums/f46/as...dified-478473/

I've owned the Corda Arietta and the ST/STX btw

 

[ROBSCIX]

Quote:

Originally Posted by zeromacro /img/forum/go_quote.gif Thanks for answering my question. Having said that what opamps would you recommend to make the sound a lot warmer? It sounds way too harsh at the moment even though my amp is quite warm sounding (Meier Corda Headfive).

I find many of the Burr-Brown units are quite warm. Units such as the OPA2134, OPA827's, OPA2132..etc. You might want to start with a couple of the Burr-Brown units and test them out to see if you are getting closer to what your after. It really dpends on what you are looking for and what you hear right now. Some perceive the STX and ST as warm and other perceive them as bright. Your external gear also plays a part in the equation.

 

[ManuLM]

Quote:

Originally Posted by ManuLM /img/forum/go_quote.gif Hi there, One point i find strange, I would like your feedback here: have you ever used volume beyond 50% ? As soon as I do it, I have clipped samples resulting in a scratch. Is this related to the max input of my speakers ?

anybody has a clue abt that ?

 

[cschiu]

no takers on my questions? i'm still trying to figure out QT and windows audio settings. and whether an external CMOY amp would be redundant with this card. any help, or even link to an existing thread would be much appreciated.

Quote:

Originally Posted by cschiu /img/forum/go_quote.gif i've done my best to search through this thread, but i've still got a couple of standing questions: 1. don't care too much about asio or bit-matching. for simplicity i will be using itunes. under quicktime preferences for "play audio using," windows audio session is grayed out (due to my OS = W7 64-bit, if i've read up correctly), which means i've got to choose "safe mode" or "direct sound." does it matter? why the hell is it grayed out in the first place? 2. am i correct to assume that QT sound out should match windows default format as well as xonar audio center settings? for me it would be 24-bit, 44.1kHz, stereo. 3. exclusive mode in windows? yes/no on one or both check boxes? 4. i understand that for low impedance headphones, the ST built-in amp ain't all that great. i have a CMOY portable amp coming in the mail. will the CMOY amp be of ANY benefit for my headphone out or for my line out to speakers for that matter? or will it just be redundant and make things worse? speakers are klipsch 2.1s and i've got a pair of grado rs1i's. thanks in advance guys.

 

[scutzi128]

Does anyone know how you get national semiconductor to send a sample to students?

 

[ManuLM]

Send a mail to their sales contact I would say.

 

[Bizarro]

Just ordered two LT1028's. Those are single channel, right? So I need a single-to-dual adapter from cimmarontechnology.

Has anyone tried NE5532? TI recommends NE5534 to I/V in PCM1792A datasheet.

 

[zeromacro]

Quote:

Originally Posted by ROBSCIX /img/forum/go_quote.gif I find many of the Burr-Brown units are quite warm. Units such as the OPA2134, OPA827's, OPA2132..etc. You might want to start with a couple of the Burr-Brown units and test them out to see if you are getting closer to what your after. It really dpends on what you are looking for and what you hear right now. Some perceive the STX and ST as warm and other perceive them as bright. Your external gear also plays a part in the equation.

sorry for my lack of knowledge, but you only need the change one opamp (buffer opamp) for the line-out am I correct? And the ones you recommended would work just fine to replace it?

 

[ROBSCIX]

Quote:

Originally Posted by zeromacro /img/forum/go_quote.gif sorry for my lack of knowledge, but you only need the change one opamp (buffer opamp) for the line-out am I correct? And the ones you recommended would work just fine to replace it?

No, for the line out you can change all three opamps.
The JRC2114D are your differential input I/V converters. The LME4562NA is your single ended buffer.

When you use the line out all three opamps are in use. When you switch to headphone mode the LM4562NA is replaced by the TPA6120A2 headphones amplifer chip.
So if you are using headphone output you only need to change the I/V opamps.
simply,
For line out you can change all three
For head out you only change the back two because the single ended buffer is not being used the can amp chip is.

Don't worry about the questions, we all learn by asking questions. If you have any more questions post them somebody will answer you if they can.

 

[KingFiercer]

LME49710HA @NATS ñïðàâî÷íîå îïèñàíèå / ÝËÈÒÀÍ - Èíòåðíåò-ìàãàçèí ýëåêòðîííûõ êîìïîíåíòîâ
It is true chip? =) Seen different versions of them, so interested in before buying.

 

[ROBSCIX]

Quote:

Originally Posted by ManuLM /img/forum/go_quote.gif anybody has a clue abt that ?

When you use your card with anything beyond 50% you get trouble?
Are you using just the line outs or the amplified headphones output?
I have to ask as I have seen people use this to drive their amplifiers.

 

[ROBSCIX]

Quote:

Originally Posted by KingFiercer /img/forum/go_quote.gif LME49710HA @NATS ñïðàâî÷íîå îïèñàíèå / ÝËÈÒÀÍ - Èíòåðíåò-ìàãàçèí ýëåêòðîííûõ êîìïîíåíòîâ It is true chip? =) Seen different versions of them, so interested in before buying.

They look similar but you will require two plus an adapter to use it on this card.

 

[Razeus]

I swear last week, I was at Fry's checking out this Asus product so I can have a sound card/headphone amp in my rig. All was good, but at $200 I figured I'd go online. All was good at the time, I was just spending the last week doing research and everything pointed to this being the card to get. So I go to Fry's today to give it a final look over, but they were out. No problem since I was going to buy it online anyway, but the most popular stores (Amazon and using Bing Cashback stores) are all out of them.

Is there a new model in the works?

 

[ROBSCIX]

ASUS is coming out with a version in conjuction with Sennheiser. It would seem it is a card and headphone bundle. We are working on getting sneak peak, with specs and pictures etc..