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Audio GD SA-31 head amp/ preamp . A powerfull Head Amp with Diamond Difference design .

post #1 of 396
Thread Starter 

Remember the Audio GD C2-SA ? Cheap and yet very powerfull . It's seams back , a bit pricer but even more powerfull . 

 

 

http://www.audio-gd.com/Pro/SA/SA31/SA31EN.htm

 

NFB61.JPG

 

Audio GD SA31 head amp

 

 

This beast should be able to drive any headphone very_evil_smiley.gif like Hifiman HE-6 etc . 

 

 

SA-31 Standard (applied Neutrik RCA scokets): USD499

 

 

and an optional remote control . More informations at audio GD ^^

 

Like for NFB-6 , a "paired" DAC comes with the SA-1 (but you can use what ever DAC you want this )

 

http://www.audio-gd.com/Pro/SA/SA1/SA1EN.htm 


Edited by HaVoC-28 - 10/25/12 at 10:42am

Gear mentioned in this thread:

post #2 of 396
I currently have the c2-Sa I was waiting for these to come out as Kingwa mentioned them to me.
Looks sweet but no balanced input kills it for me. Ill stick with the c2-S.A. and Schiitt mjolnir I preordered.
post #3 of 396
I would rather get this than NFB 6 because there are no SMD components.
post #4 of 396

Just when I already given up on acquiring their diamond differential stuff they churning out a new one...frown.gif

post #5 of 396

I am placing my order for the new dac tomorrow since it's the highest-end single-ended dac they carry, and should compare very well to the old Ref 9 (Diamond Differential too) that I once owned. The amp should be a spectacular performer as well, if my former C-2 SA was any indication. I would buy that too in a heartbeat, but I have a ZDSE arriving in another couple of weeks so there's no need. Kind of wish Kingwa would make another totl SE dac though...

 

-Daniel

post #6 of 396

I'm trying to understand the differences between the SA-31 and the C-2.2 that Audio GD currently offers. As I understand it, this new amp is closer to the older C2-SA, but was the C2-SA better than the C-2.2?

post #7 of 396
Quote:
Originally Posted by Utopia View Post

I'm trying to understand the differences between the SA-31 and the C-2.2 that Audio GD currently offers. As I understand it, this new amp is closer to the older C2-SA, but was the C2-SA better than the C-2.2?
SA usually means its more musical
post #8 of 396
Quote:
Originally Posted by .Sup View Post

SA usually means its more musical

mmm I like, aslong as its not too tubey.

 

The question now is how does the SA-1 stack up against the Yulong D100 or D18? 

post #9 of 396

With 10 WATTS output won't it get to ear-splitting levels very quickly giving you very little useful range on the volume knob where channel imbalance is most likely?  I would love to order an Audio-gd single-ended amp/pre-amp with a remote, but that 10 watts seems ridiculous except as maybe a one-off specialty amp for the Hifiman HE-6.
 


Edited by runswithaliens - 7/15/12 at 7:44pm
post #10 of 396
Quote:
Originally Posted by runswithaliens View Post

With 10 WATTS output won't it get to ear-splitting levels very quickly giving you very little useful range on the volume knob where channel imbalance is most likely?  I would love to order an Audio-gd single-ended amp/pre-amp with a remote, but that 10 watts seems ridiculous except as maybe a one-off specialty amp for the Hifiman HE-6.
 


power not necessarily mean loudness, the gain more involved when it come to loudness. also Audio-Gd use digital relay volume so channel imbalance is not a problem.

post #11 of 396
Quote:
Originally Posted by IndieScent View Post


power not necessarily mean loudness, the gain more involved when it come to loudness. also Audio-Gd use digital relay volume so channel imbalance is not a problem.

 

Thank you for that information IndieScent - that is very useful to know.  Now I feel a bit foolish for saying it was ridiculous to have 10 watts available.  redface.gif

 

Would having all that extra power available be a benefit for dynamic peaks/impact and bass slam? I wonder if that would also be true then in its role as a pre-amp?  If I prefer to listen at what are probably lower volume levels than many, I should then probably get the +/-5db option for gain rather than the 0/+10 option (for Senn HD650s and Fostex T50RPs (not yet modified)?

 

On a further and more speculative note; with 10 watts available into 40 Ohms, I wonder if he could have put speaker taps on the back as well as it must put out a decent amount o' power into 8 ohm speaker loads... if technically possible.

post #12 of 396

Bump for any speculative comments from any seasoned Audio-gd fans about this amp.  What should we expect from a "Fully  discrete Diamond Difference design" which "retains rich details and high clarity with its abundant music flavor with wide and deep sound stage"?

 

Thinking about pairing the NFB-3.2 DAC with this as I can't quite see spending the extra $550.00 on the matching SA-1 DAC despite the allure of owning an Audio-gd PCM1704UK based DAC...
 

post #13 of 396
Quote:
Originally Posted by runswithaliens View Post

 

Thank you for that information IndieScent - that is very useful to know.  Now I feel a bit foolish for saying it was ridiculous to have 10 watts available.  redface.gif

 

Would having all that extra power available be a benefit for dynamic peaks/impact and bass slam? I wonder if that would also be true then in its role as a pre-amp?  If I prefer to listen at what are probably lower volume levels than many, I should then probably get the +/-5db option for gain rather than the 0/+10 option (for Senn HD650s and Fostex T50RPs (not yet modified)?

 

On a further and more speculative note; with 10 watts available into 40 Ohms, I wonder if he could have put speaker taps on the back as well as it must put out a decent amount o' power into 8 ohm speaker loads... if technically possible.

 

well some amp designer believed that is one on the advantage when you fully and properly powering your can IIRC. as for speaker taps, cant comment much as I myself not that much knowledge how much difference in design or component might be needed needed for power amp.

 

Quote:
Originally Posted by runswithaliens View Post

Bump for any speculative comments from any seasoned Audio-gd fans about this amp.  What should we expect from a "Fully  discrete Diamond Difference design" which "retains rich details and high clarity with its abundant music flavor with wide and deep sound stage"?

 

Thinking about pairing the NFB-3.2 DAC with this as I can't quite see spending the extra $550.00 on the matching SA-1 DAC despite the allure of owning an Audio-gd PCM1704UK based DAC...
 

 

 

if you can afford it I would suggest get the PCM1704UK DAC as the chip is no longer in production iirc and Audio-Gd might be the last one with it on stock tongue_smile.gif.


Edited by IndieScent - 7/19/12 at 7:59pm
post #14 of 396
Thread Starter 
Quote:
Originally Posted by IndieScent View Post

 

well some amp designer believed that is one on the advantage when you fully and properly powering your can IIRC. as for speaker taps, cant comment much as I myself not that much knowledge how much difference in design or component might be needed needed for power amp.

 

 

 

if you can afford it I would suggest get the PCM1704UK DAC as the chip is no longer in production iirc and Audio-Gd might be the last one with it on stock tongue_smile.gif.

Hum ? where did you read that PCM1704 are no longer in production ? 

 

http://www.ti.com/product/pcm1704 according to this , production is not yet finished , but could be terminated any time soon .   

 

It will be when labelised like that : http://www.ti.com/product/pcm63

 

I know that a time Audio GD claimed that PCM1704UK was over peraphs their chinese distributor was told from ti that PCM1704 was over , but peraphs with huge demand , TI extended PCM1704 life time for a bit . " TI want to discontinued PCM1704 but there are still a lot hi-end fans love the real sound of the PCM1704UK." (From Audio GD , means that PCM1704UK still avaliable but no one knows when it will be definitively over)

 

 

Any way i am saving to get one of this DAC with PCM1704UK (Ref 5.2 in mind) . But if i miss it , i could pass without it tongue.gif , peraphs waiting for some NFB-7.1 that appear time to time popcorn.gif


Edited by HaVoC-28 - 7/19/12 at 11:59pm
post #15 of 396
Quote:
Originally Posted by HaVoC-28 View Post

Hum ? where did you read that PCM1704 are no longer in production ? 

 

http://www.ti.com/product/pcm1704 according to this , production is not yet finished , but could be terminated any time soon .   

 

It will be when labelised like that : http://www.ti.com/product/pcm63

 

I know that a time Audio GD claimed that PCM1704UK was over peraphs their chinese distributor was told from ti that PCM1704 was over , but peraphs with huge demand , TI extended PCM1704 life time for a bit . " TI want to discontinued PCM1704 but there are still a lot hi-end fans love the real sound of the PCM1704UK." (From Audio GD , means that PCM1704UK still avaliable but no one knows when it will be definitively over)

 

 

Any way i am saving to get one of this DAC with PCM1704UK (Ref 5.2 in mind) . But if i miss it , i could pass without it tongue.gif , peraphs waiting for some NFB-7.1 that appear time to time popcorn.gif

 

I stand corrected then. I guess I got the impression by reading on Audio-gd site, but then again raising prices means less stock usually.

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