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Audio GD SA-31 head amp/ preamp . A powerfull Head Amp with Diamond Difference design . - Page 19

post #271 of 391
Quote:
Originally Posted by CJG888 View Post

So I should get the lower gain volume board, then?

I tend to listen fairly quietly. The A900X become too loud to listen to above ca. 18 on low gain!!!

 

Does it provide a smooth enough volume control on the first 18 steps? If yes, you don't need the board.

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post #272 of 391
Yes, it does. I was just wondering whether it performed better with less attenuation at the volume control stage, and lower gain (assuming that the gain control is not just a "rough" volume control).

I guess it all depends what the gain selector actually does.
post #273 of 391
Quote:
Originally Posted by CJG888 View Post

Yes, it does. I was just wondering whether it performed better with less attenuation at the volume control stage, and lower gain (assuming that the gain control is not just a "rough" volume control).

I guess it all depends what the gain selector actually does.

 

Yeah, that make sense if the amp has the ordinary attenuator + gain.

post #274 of 391
Quote:
Originally Posted by CJG888 View Post

I have found that this amp sounds best driving the HE-500s on the high gain setting, with the volume set to 20 or below. My source is an Opera Consonance CD2.3 Mk III with an output of 2.3V. On the low setting, the sound lacks dynamics and sounds too "soft" and "rounded". Is "high" the recommended gain setting for orthos?

 

Quote:
Originally Posted by Clemmaster View Post

 

Sound great of low gain for me.

 

There's a boost at 48 on the volume. Don't know if its a resistor miss-match that gives a bigger volume boost than the other steps or anything but the sound "awakens" past this point rolleyes.gif

 

I use the SA-31 on low gain. This is perfect with LCD-2/LCD-3. With the SA-1.32 DAC on high gain, outputting 2.5v. Volume range lies anywhere between 20-50. This puts the amp a good way towards the middle of the range. I can go much quieter or louder if need be and sounds full and dynamic throughout. I always understood that you should use as little gain as you need. Higher gain will raise the noise floor and also further amplify any misc. noise. No need to use high gain if low gets the job done. 

 

I also find that high gain may sound a bit punchier ..."maybe" ...but this may be a mind trick because the amp is so powerful at low numbers on the dial. But it also gives very little useable volume, somewhere between 5-15. A little more raggedness to the sound too probably due to too much gain being applied. Really spend some time with low gain, you may find the sound is full, dynamic, and balanced. Just my opinion and preferences. 

 

I also notice that little "jump" at 48, low gain. Wonder what that is,..sometimes I get the amp that high, sometimes not. Sounds good on either side of 48 though. I don't know if it does that at 48 on high gain....and I'm not going to find out, it would shred your eardrums!

post #275 of 391
The HE-4 will definitely pass 48 on high gain.
post #276 of 391
Yesterday, I tried the HE-500s at 48 on low gain. A little on the loud side for me, but definitely better.

Maybe the amp just needs some more burn-in. We're at about 15 hours now - because of the heavy electrical storms in Shanghai at this time of year, I can't leave it running overnight...

The HD600s are also sounding better and better.

The A900X can only be listened to at 15 or lower on low gain... Any more is dangerous to hearing! The bass seems a little overblown - maybe I will try the A1000 pad mod. This is said to increase comfort and reduce bass bloat. I do sometimes need a closed can for practical reasons (e.g. the air conditioning running at full blast when it's 45 degrees outside).
post #277 of 391
The HE4 needs near HE6 levels of power. He500 is a pushover in comparison (the HEx00 line is designed to be driven by most amps, while the single digit line needs specialized amps, or really high powered ones).
post #278 of 391
Quote:
Originally Posted by Mad Lust Envy View Post

The HE-4 will definitely pass 48 on high gain.

 

I'm sure those "single digit" HiFimans would! I was just referring to LCD's (pushovers, like HE-500, right? LOL) with a 2.5v signal coming into the amp...Waaaaaaayyyy too high a volume!

 

Quote:
Originally Posted by CJG888 View Post

Yesterday, I tried the HE-500s at 48 on low gain. A little on the loud side for me, but definitely better.

Maybe the amp just needs some more burn-in. We're at about 15 hours now - because of the heavy electrical storms in Shanghai at this time of year, I can't leave it running overnight...
 

 

I am guessing you need many more hours of burn in for things to fully settle. I say "guessing" because I bought mine used and had about 50-100 hours on it now. It seems to be settled for the most part. Everything I've read about the Audio-gd gear mentions at least 100 hours of use or more for burn in.

 

How do you find the sound quality when the volume is less than 48? That little jump from 47-48 sounds to me like one or two of the volume steps are "missing" or just a small jump in volume if that makes sense. I'm not sure if there's any change in quality, really. It just tricks you into thinking it's more "alive" because it's suddenly louder.  

post #279 of 391

I am interested to this product due to the diamond difference circuit design. However, I would like to have any feedback from existing users how it sounds after fully burn-in. Tonal Balancing is the area which I concern. TIA

post #280 of 391

It has essentially no coloration, very detailed but without harshness and nice 3D sound (wide soundstage).

post #281 of 391
Quote:
Originally Posted by tim3320070 View Post

It has essentially no coloration, very detailed but without harshness and nice 3D sound (wide soundstage).

 

Thanks, sounds great.

How about the bass?

post #282 of 391
Quote:
Originally Posted by ManAtWork View Post

 

Thanks, sounds great.

How about the bass?

 

The bass is well controlled from what I can tell.

I has a very nice slam with the HE-500 & HE-5LE.

 

It compares very well with the built-in amp in my NFB-27 (which is supposed to be based on the Master-8. To what extent, I don't know) and adds the musical flavor without trading for details or resolution.

I actually prefer it overall because the musical flavor is a very nice addition to the sound. Also, it does all this single-ended when the NFB-27 amp is balanced. The sound-stage is roughly the same size (bigger, perhaps), which is a feat considering this is usually an advantage for balanced amps ;)

post #283 of 391
Quote:
Originally Posted by Clemmaster View Post

 

The bass is well controlled from what I can tell.

I has a very nice slam with the HE-500 & HE-5LE.

 

It compares very well with the built-in amp in my NFB-27 (which is supposed to be based on the Master-8. To what extent, I don't know) and adds the musical flavor without trading for details or resolution.

I actually prefer it overall because the musical flavor is a very nice addition to the sound. Also, it does all this single-ended when the NFB-27 amp is balanced. The sound-stage is roughly the same size (bigger, perhaps), which is a feat considering this is usually an advantage for balanced amps ;)

 

I like what you said, "add the musical flavor without trading for details or resolution", this is what I am seeking for. You know, I worried if there was trade off on resolution when companies claimed their products are musical. normal_smile%20.gif If so, with considering the price tag of SA-31, it worth to have a try for any new comer of Audio_GD like me. I am attracted with the diamond difference design while I am a big fan of Accuphase.

post #284 of 391
Quote:
Originally Posted by ManAtWork View Post

I like what you said, "add the musical flavor without trading for details or resolution", this is what I am seeking for. You know, I worried if there was trade off on resolution when companies claimed their products are musical. normal_smile%20.gif
 If so, with considering the price tag of SA-31, it worth to have a try for any new comer of Audio_GD like me. I am attracted with the diamond difference design while I am a big fan of Accuphase.

Manatwork, the comments posted above are pretty much the same as my experience with the SA-31. I think I've posted on this thread that the "musical" flavor to me, seems to bring out the details of harmonics and reverberations, etc., if that makes any sense. The best way I can describe it. But it's not artificial sounding or anything, very natural and lifelike. Very subtle.

The other thing is the warmth jumpers add some “fullness" to the bass as well.Probably too much for my tastes with the "warm 2" setting but "1" is very nice.

I really am liking this amp with the LCD-3/LCD-2.....
post #285 of 391

Thanks your guys for your user comments. I am now pretty sure this is what I want. 

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