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The HeadAmp GS-X and GS-X MK2 Thread - Page 74

post #1096 of 3826

Could be wrong, but 15x is the Dynalo closed loop gain.

post #1097 of 3826
Quote:
Originally Posted by preproman View Post

I'm getting a more open sound with the high gain.  On medium gain it sounds a little muffled in comparison.


Often times a change in gain settings on a headamp will also change the absolute polarity of the signal. So it will sound muffled on one gain setting and clear/dynamic with better separation on the other setting. Which gain setting is best will depend on individual recordings - not because the high gain setting sounds better than the low gain setting, per se. In other words some music will sound better on the lower gain setting.

 

So please experiment, even though I realise you will have to change the volume setting to get the same listening level. I do this all the time, and it is strikingly obvious which gain setting sounds better on each recording (at least to me - and a lot of the time). Getting the "correct" gain setting for each recording improves my enjoyment of a lot of music. It may work with your head amp?

 

Cheers

Frank


Edited by xp9433 - 4/14/13 at 4:44pm
post #1098 of 3826
Quote:
Originally Posted by xp9433 View Post


Often times a change in gain settings on a headamp will also change the absolute polarity of the signal.

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post #1099 of 3826

Quote:

 

"Often times a change in gain settings on a headamp will also change the absolute polarity of the signal"

 

Originally Posted by Andrew_WOT View Post
 

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I'm not sure what your response means? Perhaps this link will help?: http://en.wikipedia.org/wiki/Absolute_phase

 

Frank

post #1100 of 3826

The first dynahi that was built in 2003 was built with a voltage gain of 20. After that many were built

with voltage gains ranging from 3 to 20. ( I had to look it up) Changing the gain effects the phase

very slightly at frequencys well past 50khz. Like it would do with all voltage feedback amplifiers.

post #1101 of 3826

It was my understanding the higher the gain is, the less feedback your have.  The lower the gain is, the more feedback your have (NFB)

post #1102 of 3826
Quote:
Originally Posted by kevin gilmore View Post

The first dynahi that was built in 2003 was built with a voltage gain of 20. After that many were built

with voltage gains ranging from 3 to 20. ( I had to look it up) Changing the gain effects the phase

very slightly at frequencys well past 50khz. Like it would do with all voltage feedback amplifiers.

sorry for this question but i´m a authentic ignorant in electronic.

a superior voltage gain introduces a greater noise?

post #1103 of 3826

usually the output noise of an amplifier is related directly to the input noise of an amplifiers first stage.

So an amplifiers output noise is directly related to the gain of the amplifier. So an amplifier with more

gain has more output noise. Some amplifiers put all the gain before the volume knob which increases

the apparent signal to noise ratio.

 

If you increase the amount of negative feedback in an amplifier you reduce the gain and reduce the distortion.

But you can also reduce the gain by reducing the feedback and reducing the amount of open loop gain.

post #1104 of 3826
Quote:
Originally Posted by kevin gilmore View Post

usually the output noise of an amplifier is related directly to the input noise of an amplifiers first stage.

So an amplifiers output noise is directly related to the gain of the amplifier. So an amplifier with more

gain has more output noise. Some amplifiers put all the gain before the volume knob which increases

the apparent signal to noise ratio.

 

If you increase the amount of negative feedback in an amplifier you reduce the gain and reduce the distortion.

But you can also reduce the gain by reducing the feedback and reducing the amount of open loop gain.

90% understoodbiggrin.gif

thank you

post #1105 of 3826
Quote:

Originally Posted by kevin gilmor

 

usually the output noise of an amplifier is related directly to the input noise of an amplifiers first stage.

So an amplifiers output noise is directly related to the gain of the amplifier. So an amplifier with more

gain has more output noise. Some amplifiers put all the gain before the volume knob which increases

the apparent signal to noise ratio.

 

If you increase the amount of negative feedback in an amplifier you reduce the gain and reduce the distortion.

But you can also reduce the gain by reducing the feedback and reducing the amount of open loop gain.

Thanks for posting .

 

Trying to clarify and understand, from the above, would it be correct to say that with the volume listening level matched,

 the 600 ohm T1  phone would sound better on medium than high gain setting  theoretically ?

Does the GSX MII put all the gain before the volume knob as you said?

What would the optimum gain level setting for the Beyer T1 600 ohm be theoretically ?

Does the volume level affect the sound to noise ratio?

 

Thanks for being patient.

post #1106 of 3826

The gsx puts all the gain after the volume knob. So the position of the volume knob

has no effect on the signal to noise ratio unless your source is noisy.

 

I have never heard T1, so can't answer that one.

post #1107 of 3826

Hi guys, after the inital problem related to one fuse apparently OK but gone with Justin providing simply great support, I have to say I completely love the new gs-x mkII.

 

I use it mainly as preamp for my balanced monitor dynaudio (BM14a with Bm12s) and 3 points were crystal clear as soon as I switch it on: the really low noise floor, the deep, controlled and balanced bass, and the open soundstage, it is more like 'live performance' , more enjoyable and convincing, it's simply amazing!

 

Thank you Justin, I ordered back in may 2012 so the waiting was really long but it does worth!


Edited by vergefio - 4/18/13 at 7:32am
post #1108 of 3826
Quote:
Originally Posted by vergefio View Post

Hi guys, after the inital problem related to one fuse apparently OK but gone with Justin providing simply great support, I have to say I completely love the new gs-x mkII.

 

I use it mainly as preamp for my balanced monitor dynaudio (BM14a with Bm12s) and 3 points were crystal clear as soon as I switch it on: the really low noise floor, the deep, controlled and balanced bass, and the open soundstage, it is more like 'live performance' , more enjoyable and convincing, it's simply amazing!

 

Thank you Justin, I ordered back in may 2012 so the waiting was really long but it does worth!

Nice mini review vergefio, good to known balanced monitors work well with the GS-x. I too use pre out, although unbalanced to my 20year old Richter Excalibur speakers using a crappy Kenwood amp. The sound is amazing, and yes very live like in performance

 

I also had to switch out the fuses, in the end it wasn't a big deal, however after a week or so of uses, went to switch it on and nothing happened WTF!!..... but as I said no problem Justin knew it was the fuses, and was backup running in no timebiggrin.gif

post #1109 of 3826

Can anyone tells me that how long will it takes to get GS-X if I place my order now?

post #1110 of 3826
2-3 months
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