or Connect
Head-Fi.org › Forums › Equipment Forums › Dedicated Source Components › Thoughts on a bunch of DACs (and why delta-sigma kinda sucks, just to get you to think about stuff)
New Posts  All Forums:Forum Nav:

Thoughts on a bunch of DACs (and why delta-sigma kinda sucks, just to get you to think about stuff) - Page 57  

post #841 of 6360
Quote:
Originally Posted by SinSation View Post
 


Have you actually heard M7 or Gungnir?

 

During my recent DAC search I heard the Gungnir and a used M7. I also finally got to hear the beloved Teac UD-501 and demoed pretty much everything Headphone Bar sells. I also got to briefly hear the Chordette and some other units through speakers at a local Hi-Fi place.

 

I don't think I have heard anything else on the list except for the X-Sabre and Bifrost which I own. I nearly bought the PWD MK2 without hearing it when the price dropped recently, but I went with the NAD M51 as we have a dealer just a few blocks from here and I could demo it.

 

When I say I would rate one DAC over another it's really just a matter of trivial personal preference. I know I would be happy with hooking up the Bifrost or Gungnir from time to time and rocking out etc.

 

The thing I like about the NAD is that it just doesn't sound like anything else and doesn't exhibit any particular signature (Wolfson, Sabre, AKM) that I have ever heard. It has an unusual and hallucinatory realistic/unrealistic smooth and detailed sound that I am really enjoying. I guess I am set until the next big thing comes along.

post #842 of 6360
Quote:
Originally Posted by GJoshi View Post

Hi there,
Let me start by saying that this post is very informative.
I am not an audiophile, but just recently acquired Revel Salon2 speakers and Pass labs X250.8 amplifier. All my music is in AIFF format in Mackbook pro (itunes). I just returned Benchmark DAC2 converter which I found to be very poor in midrange and bass and too shrill in treble.
What will be the best arrangement of components between my macbook pro and amplifier?
- DAC (with and without DSD). Where does Ayre QB-9 DSD stand?
- Preamplifier (can one do without it?)
- Connections (USB to IS2 [OR5]?)
Thx for attending....appreciate it!!

I have a Pass Labs X-150, a very similar amp ( obviously mine has less power!). redface.gif
Your amp accepts a balanced input, has a balanced amplification topology and has a balanced output.
I would try to get a pre-amp with balanced outputs....just my 2 cents worth.

Did you use the balanced outputs on the DAC2? Not too sure if it would have "saved" the Benchmark though...
post #843 of 6360
Quote:
Originally Posted by Sanlitun View Post
 

 

I wasn't certain from your post how it may have been set up when you did your demo.

 

When I got mine I hooked it up like I had my previous DAC set up (Matrix X-Sabre) which was with RCA cables so I could do a comparison. I was initially not impressed and thought it was not a huge improvement over the X-Sabre. It wasn't until I did the XLR setup and spent some time with it that I began to see just how good the NAD is.

 

Sometime later I read this post about the output differences and sure enough that seems to be the case. The XLR outs are much more refined and coherent sounding to my ears.

 

Anyways it's a great DAC, and I would rate it above the Gungnir or Master 7 on the listing at the beginning of this thread.

I wonder if using the NAD with the DNA single ended would be a good or bad thing? 

 

Maybe it would not be a good pairing because the DNA is single ended like my WA2

post #844 of 6360

rca to xlr adapter is not balanced. it will use the better op amp. which may make a big difference. problem is if it is not attenuated the signal is saturated for rca.

post #845 of 6360

WTF? Where did all these NAD fanboys spring from?

post #846 of 6360
There's a joke there.
post #847 of 6360
Quote:
Originally Posted by music_man View Post
 

rca to xlr adapter is not balanced. it will use the better op amp. which may make a big difference. problem is if it is not attenuated the signal is saturated for rca.

 

So basically it is useless to go from a balanced XLR output to an RCA input (not just with the NAD but with anything)?

post #848 of 6360
Quote:
Originally Posted by elmoe View Post
 

 

So basically it is useless to go from a balanced XLR output to an RCA input (not just with the NAD but with anything)?

That is not what he said. A better op-amp on the balanced outs can still make a difference in SQ without the benefit of a balanced connection.

post #849 of 6360

But he said the signal would be saturated, so doesn't that defeat the purpose?

post #850 of 6360

Since this thread is getting pretty technical, just thought I'd share a video I just watched that was quite interesting (and entertaining) re digital sampling and DA conversion - https://www.youtube.com/watch?v=cIQ9IXSUzuM. Hope others find it just as educational :P

 

Follow-up article from the same guy re higher sampling rates (44.1 vs 192 kHz) here:  http://xiph.org/~xiphmont/demo/neil-young.html - Might be interesting to see if any of your systems produce audible distortion from ultrasonic content... 


Edited by aive - 3/21/14 at 4:19am
post #851 of 6360
Quote:
Originally Posted by music_man View Post

rca to xlr adapter is not balanced. it will use the better op amp. which may make a big difference. problem is if it is not attenuated the signal is saturated for rca.

Not too sure why you think the signal needs to be attentuated.
If you pull off one side of a Balanced signal off the XLR output, it is typically the same level as the output signal from the RCA.

XLR (balanced) will have twice as much voltage as single ended if you USE BOTH SiGNAL PINS off the XLR.
post #852 of 6360

actually chris j you are correct. duh. I was thinking they twisted both pins to the center on those. I doubt they do that. one pin is indeed the right voltage. of course that does ordinarily not have the benefit of a balanced connection. in this case it will take advantage of the better op-amp. which I said should make a big difference for these particular dacs. like the nad and teac.

post #853 of 6360
Quote:
Originally Posted by music_man View Post
 

actually chris j you are correct. duh. I was thinking they twisted both pins to the center on those. I doubt they do that. one pin is indeed the right voltage. of course that does ordinarily not have the benefit of a balanced connection. in this case it will take advantage of the better op-amp. which I said should make a big difference for these particular dacs. like the nad and teac.

 

And coincidentally, the Benchmark DACs as well.

post #854 of 6360
Thread Starter 
Quote:
Originally Posted by music_man View Post
 

actually chris j you are correct. duh. I was thinking they twisted both pins to the center on those. I doubt they do that. one pin is indeed the right voltage. of course that does ordinarily not have the benefit of a balanced connection. in this case it will take advantage of the better op-amp. which I said should make a big difference for these particular dacs. like the nad and teac.

 

And the better op-amp SE will indeed be better than lesser op-amps balanced, unless you are running long lengths in a studio environment. It's not even funny how so many DACs which offer balanced outputs actually have inferior sounding outputs on the balanced outs. It's something to be aware about when considering the purchase of DACs.

post #855 of 6360
Quote:
Originally Posted by purrin View Post
 

 

And the better op-amp SE will indeed be better than lesser op-amps balanced, unless you are running long lengths in a studio environment. It's not even funny how so many DACs which offer balanced outputs actually have inferior sounding outputs on the balanced outs. It's something to be aware about when considering the purchase of DACs.

Yes that already happen to me that the single ended connection available on one of the balanced DAC's I had was better than the balanced connection on the same DAC. If you are not using op-amps chips for the balanced outputs you need better parts matching for the 4 sides of a stereo balanced connection otherwise it can sound like crap. That also happen to me.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Dedicated Source Components
This thread is locked  
Head-Fi.org › Forums › Equipment Forums › Dedicated Source Components › Thoughts on a bunch of DACs (and why delta-sigma kinda sucks, just to get you to think about stuff)