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REVIEW - Yulong Audio Sabre DA8 Reference DAC
May 7, 2014 at 8:12 AM Post #1,307 of 1,613
incred1ble said:
  Hello,

I just received my DA8/A28 combo today. They are connected via balanced cables. The input is via USB. I installed the driver first, then the ASIO drivers. When playing ASIO, DS and WASAPI (any other than 24bit), I get a strong distortion coming from the left channel (tried swapping the cables, USB ports, reinstalling drivers). Using WASAPI with 24bit playback, right channel sounds somewhat louder. Is my DA8 faulty?

P.S, the distortion occurs with WASAPI 24bit too after changing different the outputs, however goes away after some time.

P.P.S, using DS the distortion comes and goes after switching the outputs from WASAPI 24bit to DS. The distortion is there all the time using ASIO though.

P.P.P.S, the distortion seems to be gone using DS and WASAPI (16-24 bit). I haven't touched the on screen settings for a while and let it run for more than 1 hour now. Also, I am upsampling to 96 khz, the rest still produce distortion. Should I try and buy TOSLINK or SPDIF? Can this be caused by usb interface inside the DA8?
Click to expand...

I believe your DA8 is faulty. I suggest you to contact Yulong and the store where you bought it.
 
May 7, 2014 at 12:39 PM Post #1,308 of 1,613
Just tried coaxial connection - the problem is gone completely. Should I bother replacing it? I don't mind using other inputs for the rest of the time.. Replacing it would cost me around $50-100 for shipping + import duty tax..
 
May 7, 2014 at 1:46 PM Post #1,309 of 1,613
My opinion is that Yulong should pick up any cost to replace the DAC.  Let us know how Yulong responded, I hope the step up and replace the DAC for you with out you having any additional expense.
 
May 7, 2014 at 5:08 PM Post #1,311 of 1,613
incred1ble said:
  I didn't buy it directly from him. The distributor won't pay the forward shipping costs + import taxes.
Click to expand...


Out of interest, would that distributor be Kidult?   If so, was it originally shipped to you from their UK warehouse or headquarters in China?
 
Might place an order for a different Yulong model, hence the interest in how they handle faulty items.
 
May 7, 2014 at 9:03 PM Post #1,314 of 1,613
incred1ble said:
  Just tried coaxial connection - the problem is gone completely. Should I bother replacing it? I don't mind using other inputs for the rest of the time.. Replacing it would cost me around $50-100 for shipping + import duty tax..
Click to expand...

Talk to Yulong. May be there is something that you can do to try to fix it yourself.
If the coaxial connection has no problem, it is possible the issue is with the Amanero module. May be replacing it is enough.
 
I had a problem with my DA8. It was related to the DSD / PCM switch in the main board. Yulong told me to replace a resistor. I did it but, unfortunately, it did not fix the problem. I sent the unit back to the store (TAM Audio). They forwarded it to Yulong that replaced it with a new one.
I had to pay shipping to Hong Kong but shipping back was free.
 
One great feature of the DA8 is the ability to play DXD (up to 384kHz) and DSD. Through SPDIF (either coaxial or optical) you are limited to 192 kHz.
 
May 7, 2014 at 9:12 PM Post #1,315 of 1,613
Thanks for letting me know. I have contacted Yulong but haven't got a reply yet. I don't think I will ever use the DSD feature and I am not using a resampler, so my songs are mainly CD quality (44.1 kHz).
 
May 9, 2014 at 5:24 PM Post #1,316 of 1,613
incred1ble said:
Thanks for letting me know. I have contacted Yulong but haven't got a reply yet. I don't think I will ever use the DSD feature and I am not using a resampler, so my songs are mainly CD quality (44.1 kHz).
Click to expand...


i would not settle and keep a defective unit that you bought new under warranty

besides having a dac that plays dsd and dxd and not use it now doesn't mean you may not use later

once you rip a couple of sacd's with the proper ps3 and start listening to dsf files you will say: wow i've been missing a lot of detail that didn't know was there

fix it if you can since you may regret it later
 
May 9, 2014 at 6:47 PM Post #1,317 of 1,613
The thing is I am not sure yet whether what causes the problem. Still waiting for Yulong's response. If it's the Amanero chip's which is faulty, it might be cheaper to replace it myself. Paying UK customs for the second time (~£200-300 or $350-500) is not what I really want..
 
May 10, 2014 at 10:44 AM Post #1,319 of 1,613
Not sure who you purchased from, but they should really be going to bat for you. Defects can and do happen, even on the best/most expensive hardware. The manufacturer should stand behind it (and historically, Yulong will) but often times the reseller can be helpful in organizing and translating for you. 
 
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