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REVIEW - Yulong Audio Sabre DA8 Reference DAC - Page 5

post #61 of 1363
Quote:
Originally Posted by project86 View Post

 

 

See, this all assumes Kingwa has any rhyme or reason to his naming conventions. I'm not so sure he does.... Ref 7 to Ref 7.1 was one of the few clear naming choices. NFB-1.32? NFB-2.32? I'm lost.


haha i was wrong though, i think the 9 series was TOTL single ended non acss dac, the 8 series was TOTL balanced non acss dac...

 

But he does kind of have a rhyme and reason to his naming...i kind of :get: it i think

post #62 of 1363
Quote:
Originally Posted by project86 View Post

 

 

See, this all assumes Kingwa has any rhyme or reason to his naming conventions. I'm not so sure he does.... Ref 7 to Ref 7.1 was one of the few clear naming choices. NFB-1.32? NFB-2.32? I'm lost.

The products may be worthwhile but the main reason I looked elsewhere is that Audio GD is all over the board with their product numerous changes and quirky descriptions. Reminds me of dim sum.

post #63 of 1363

I have to say I love DA8 more than X-Sabre after careful comparison. The two new DSD DACs are at the same level of price. So I bought them at the same time for convenience in comparison. I found DA8 has a better sound image and it place every sound at the exact position while X-Sabre was a little erratic. Besides, DA8 obviously has a smoother and more gentle treble. Fianlly, despite X-Sabre's impressive workmanship, I sold X-Sabre while keep DA8 for its emotional and touching performance in vocal.


Edited by Schro Dinger - 7/22/13 at 7:40pm
post #64 of 1363
Quote:
Originally Posted by slingshot80 View Post

Continuing Grounding Problem with Yulong DA8

 

I connected it to my other stereo system and I am having the same grounding problem. I notice that playing a DSD 128 track after a DSD 64 track or vice versa results in two bursts of noise. Playing a DSD track either 64 or 128 after another type of resolution such as DXD or Redbook, results in one burst of noise. Closing the JRiver Media software program results in one burst of noise. I have sent an email to the seller, JTam on how to return it or do they have someone in the U.S who can look at it?   

 

This is a common problem. You should try cross-fade in the track change settings.

post #65 of 1363

awesome review project86!

any chance you will be comparing DA8 with exaSound E20?

post #66 of 1363
Quote:
Originally Posted by tgx78 View Post

awesome review project86!

any chance you will be comparing DA8 with exaSound E20?

 

I second that.

 

I'm more interested in comparison with multichannel E28 which i'm contemplating for my active loudspeaker project, but i assume they share the same house sound.

 

exaSound products need more recognition on head-fi!

post #67 of 1363

Discussion seems to be slowing down...

OK, a technical question: is the usb input galvanically isolated? The amanero board itself apparently not.

Maybe Yulong implemented isolation further in the signal path?

post #68 of 1363
Quote:
Originally Posted by jaffar View Post

Discussion seems to be slowing down...

OK, a technical question: is the usb input galvanically isolated? The amanero board itself apparently not.

Maybe Yulong implemented isolation further in the signal path?

Just put electrical tape over USB pins 1&4. This negates the need for galvanic isolation and then its fed via Amanero chipset with class A power. biggrin.gif Yulong was thoughtful enough to implement this in his design. Quite a powerful USB input indeed. I went from jitter eliminator to "ON" then covering the power pins which allowed me to set it to "Bypass".

 

If you look at any USB cable, you'll see there are 4 runs of connectors on the female end.

Simply cut two very thin strips of electrical tape and put them over pins 1 & 4 to effectively isolate all power from the CPU.

 


Edited by brunk - 7/25/13 at 1:08pm
post #69 of 1363
Quote:

Originally Posted by brunk View Post

 

Simply cut two very thin strips of electrical tape and put them over pins 1 & 4 to effectively isolate all power from the CPU.

 

 

Thanks for the tip - cheap and simple! Definitely worth trying beerchug.gif

post #70 of 1363
Quote:
Originally Posted by brunk View Post
Just put electrical tape over USB pins 1&4. 

This isn't galvanic isolation.

post #71 of 1363
Quote:
Originally Posted by Esprit View Post

This isn't galvanic isolation.


no one said, that is a galvanic isolation biggrin.gif

post #72 of 1363
I'm feeling galvanic righ now wink.gif
post #73 of 1363
Originally Posted by ririeiman View Post
no one said, that is a galvanic isolation biggrin.gif

Q: OK, a technical question: is the usb input galvanically isolated? The amanero board itself apparently not.

A: Just put electrical tape over USB pins 1&4. This negates the need for galvanic isolation and then its fed via Amanero chipset with class A power.

 

Wrong answer

post #74 of 1363
Quote:
Originally Posted by Esprit View Post

Q: OK, a technical question: is the usb input galvanically isolated? The amanero board itself apparently not.

A: Just put electrical tape over USB pins 1&4. This negates the need for galvanic isolation and then its fed via Amanero chipset with class A power.

 

Wrong answer

Well I never said it was galvanic isolation. The main reason people want galvanic isolation on USB is to eliminate "dirty PC power" from creeping in the signal path. The method i described does just that. However you are correct in that its not galvanic isolation. You can elaborate more on that if you wish.

post #75 of 1363
I'm sorry but I can't elaborate "more" because english isn't my language but:
galvanic isolation has nothing to do with the "dirty PC power"
wink.gif
Add: I use a firewire cable with pins covered by tape L3000.gif

Edited by Esprit - 7/26/13 at 1:51pm
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