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REVIEW - Yulong Audio Sabre DA8 Reference DAC - Page 42

post #616 of 1596
Quote:
Originally Posted by LCfiner View Post
 

I just bought one of these and it's in the mail now from HK. I should get it next week. I'll be comparing it to my Burson HA-160D (via USB). I mainly listen to speakers now (Quad 12L actives) but I also have a Grado RS1i. It'll be curious to see how the headphone amp meshes with the Grados.

 

What I like about the Burson  sound with the RS1i is the weight and slightly dark sound that helps tame the treble. But I know from some experience with other DACs that I can get a bit better soundstaging and imaging from an upgrade. So I'm curious to see how the DA8 handles things for both the speakers and headphone out.

 

Looking forward to getting this bad boy in the house

I use the DA8 with my speakers as well (see sig) and it doesn't disappoint! I prefer the 'slow' filter because it provides a more coherent sound. Guitar plucks seem to come out of thin air and jump out past the speakers. Using the 'sharp' filter will bring a tad bit more air (high frequency) to the music, but you lose the silence between the notes and the realism is diminished. Plus, after long listening sessions you'll most likely find the 'slow' filter is less fatiguing thanks to less ringing on the IR and a slight roll off of really high HF content.

 

The internal amp should suit the Grados nicely, but you may be into the -30dB+ attenuation range, so you're going to lose a chunk of SNR. With that said, I don't think it will be problem though. Keep us updated on your impressions!

 

P.S. If using USB, cover pins 1 & 4 with small strips of electrical tape to keep the PC power from interfering. The DA8's USB provides filtered Class A power for the cable, so use the feature :)


Edited by brunk - 12/4/13 at 10:11am
post #617 of 1596

Picking up my Silver DA8 from DHL tomorrow. I also bought a new I7 Mac Mini, new IPAD Air, and some AudioQuest KingCobra IC. These will all be used with my Koss ESP-950 headphones that I've own since the 90's.Looks like I'm going to have a busy weekend.

post #618 of 1596

The DA8 has kept me away from head-fi. Quite admirable.

post #619 of 1596
Quote:
Originally Posted by brunk View Post

I use the DA8 with my speakers as well (see sig) and it doesn't disappoint! I prefer the 'slow' filter because it provides a more coherent sound. Guitar plucks seem to come out of thin air and jump out past the speakers. Using the 'sharp' filter will bring a tad bit more air (high frequency) to the music, but you lose the silence between the notes and the realism is diminished. Plus, after long listening sessions you'll most likely find the 'slow' filter is less fatiguing thanks to less ringing on the IR and a slight roll off of really high HF content.

The internal amp should suit the Grados nicely, but you may be into the -30dB+ attenuation range, so you're going to lose a chunk of SNR. With that said, I don't think it will be problem though. Keep us updated on your impressions!

P.S. If using USB, cover pins 1 & 4 with small strips of electrical tape to keep the PC power from interfering. The DA8's USB provides filtered Class A power for the cable, so use the feature smily_headphones1.gif

Ok I need some USB schoolin'. If the DA8 supplies nice clean power to the USB input, are the USB power pins (from the cable) connected, or is it EMI that causes the noise? Or, is it a ground steering effect?
post #620 of 1596
Quote:
Originally Posted by potterma View Post


Ok I need some USB schoolin'. If the DA8 supplies nice clean power to the USB input, are the USB power pins (from the cable) connected, or is it EMI that causes the noise? Or, is it a ground steering effect?

Yes, the pins are connected. Therefore, aside from making your own cable or mangling one, just cover the PC-side pins 1 & 4 with electrical tape.

post #621 of 1596
Quote:
Originally Posted by brunk View Post

Yes, the pins are connected. Therefore, aside from making your own cable or mangling one, just cover the PC-side pins 1 & 4 with electrical tape.
Huh... So is it a COTS USB input PCBA?
post #622 of 1596
Quote:
Originally Posted by potterma View Post


Huh... So is it a COTS USB input PCBA?

Yes and no, Yulong modified the Amanero board to power the USB cable. The standard board doesn't do this. Plus, he collaborated with Amanero to develop a custom driver, something that us DIY'ers can't get through our measly channels :o

post #623 of 1596

Quick question, how would the amplifier section pair with Beyerdynamic's T90/T1 ?

post #624 of 1596
Quote:
Originally Posted by theebag View Post
 

Quick question, how would the amplifier section pair with Beyerdynamic's T90/T1 ?

When I had the T1, the internal amp did OK. Music came out, but it lacked control and would get worse as you increased the volume. Instead of using the internal amp, use the XLR outs on the rear, which according to some folks is the better match for high impedance cans. I wasn't able to test XLR outs at that time.

post #625 of 1596
Quote:
Originally Posted by brunk View Post
 
Quote:
Originally Posted by potterma View Post


Huh... So is it a COTS USB input PCBA?

Yes and no, Yulong modified the Amanero board to power the USB cable. The standard board doesn't do this. Plus, he collaborated with Amanero to develop a custom driver, something that us DIY'ers can't get through our measly channels :o

Did you mean "not to power off USB cable"?

 

EDIT: Never mind, gotcha, by cable you mean input.


Edited by Andrew_WOT - 12/6/13 at 1:34pm
post #626 of 1596
Quote:
Originally Posted by brunk View Post
 

Yes and no, Yulong modified the Amanero board to power the USB cable. The standard board doesn't do this. Plus, he collaborated with Amanero to develop a custom driver, something that us DIY'ers can't get through our measly channels :o

OK, sorry to belabor this, but I'm still missing something.

 

DA8 supplies power to USB input section because its cleaner than PC power.  So are the USB jack pins 1 & 4 in the DA8 connected to circuitry the board?  I can see pulling ground from the cable to ground and either floating the +5 or putting some RC load on it.  It sounds to me from what I've heard so far that the two +5 V supplies (one from DA8 and one from the PC) are tied together?

 

Just trying to get a little clarity....  Looks like I get my answer from Post #1 of the thread.  Looks like, yes, they are both connected.  I'm not sure why, though....


Edited by potterma - 12/6/13 at 3:34pm
post #627 of 1596
Quote:
Originally Posted by potterma View Post

 

Just trying to get a little clarity....  Looks like I get my answer from Post #1 of the thread.  Looks like, yes, they are both connected.  I'm not sure why, though....

I think it was done that way for convenience sake. It's not clear (i.e. spelled out) in the feature list that the Amanero board supplies the power...

post #628 of 1596
Quote:
Originally Posted by brunk View Post
 

I think it was done that way for convenience sake. It's not clear (i.e. spelled out) in the feature list that the Amanero board supplies the power...

Alright.  Thanks for that.  Guess I'll play with electrical tape on pins 1 & 4 when I get the DA8.

post #629 of 1596
Quote:
Originally Posted by potterma View Post
 

Alright.  Thanks for that.  Guess I'll play with electrical tape on pins 1 & 4 when I get the DA8.

:eek::D When are you getting it?

post #630 of 1596
Quote:
Originally Posted by brunk View Post
 

:eek::D When are you getting it?

Early January if it doesn't win Gary's DAC challenge :biggrin:

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