Melodious MX-U8 USB Interface 8 Core XMOS chip

[rb2013]

You were warned

 

[vvolant]

Everything coming from china at low cost seems to suffer from the same bad reliability. Industral process is not good enough to produce strictly identical items.
In some areas there can also be safety risks with electrical failure due to no respect of international standards. The other side of cheap items......

 

[abartels]

  My MX-U8 arrived today
 
Plugged it in (replaces an Audio-gd DI)
 
Loud buzzing
Big click
Faint burning smell
 
Dead

 
Very sad 

 
Did you check input voltage? Maybe it was set at 110Volts? What does your supplier say?
 
Good luck!

 

[abartels]

 

 
Sergey,
 
Like I said, when using 16V you can use 2200uF, if you use 25V you have to lower capacitance because caps won't fit in enclosure.
The link you provided is not Nichicon FG but Elna, and it's only 220uF,
 
FG Series:
http://www.digikey.com/catalog/en/partgroup/fg-series/41360
 
HW Series:
http://www.digikey.com/catalog/en/partgroup/hw-series/30859
 
I didn't compare HW with FG in this application, you could ask rb2013 which ones he prefers in this application since he tried both.
 
Good luck,
 
Alex

 

[hawkhead]

   
Very sad 

 
Did you check input voltage? Maybe it was set at 110Volts? What does your supplier say?
 
Good luck!

There is no selectable voltage
 
The box is ticked 230V (I mentioned that to supplier as well - reply below)
 
"Dear David
Thanks for your message.
I am very sorry to hear that.
You can check the box, it have mark the voltage.
Also can open case, it also have voltage inside this item.
Have a great time.
 
By the way, we have send you the 230V."

 

[abartels]

 
There is no selectable voltage
 
The box is ticked 230V (I mentioned that to supplier as well - reply below)
 
"Dear David
Thanks for your message.
I am very sorry to hear that.
You can check the box, it have mark the voltage.
Also can open case, it also have voltage inside this item.
Have a great time.
 
By the way, we have send you the 230V."

 
Did your seller opted to replace the unit? I would check bottom of pcb if you can see any shortcomings,,,

 

[hawkhead]

   
Did your seller opted to replace the unit? I would check bottom of pcb if you can see any shortcomings,,,

 
No- I have replied to the seller (ShenzhenAudio) asking what happens now

 

[hgpsemaj]

According to their warranty:
 
Since courier receipt date within 7 days, if quality problems and caused the machine to malfunction, Melodious Audio would provide return and replacement of the new service, Melodious Audio would offer a round trip shipping cost.

 

[rb2013]

Everything coming from china at low cost seems to suffer from the same bad reliability. Industral process is not good enough to produce strictly identical items.
In some areas there can also be safety risks with electrical failure due to no respect of international standards. The other side of cheap items......

The Breeze Audio and the three Gustard U12's I have recieved all played perfectly.  I Have had the Breeze Audio running now for over a week 24/7 - not one unlock, pop, or click.  Super easy to install - no handshake driver needed.
 
So not all.  I think the Tanly's have been good as well - at least no reports of problems

 

[rb2013]

   
Sergey,
 
Like I said, when using 16V you can use 2200uF, if you use 25V you have to lower capacitance because caps won't fit in enclosure.
The link you provided is not Nichicon FG but Elna, and it's only 220uF,
 
FG Series:
http://www.digikey.com/catalog/en/partgroup/fg-series/41360
 
HW Series:
http://www.digikey.com/catalog/en/partgroup/hw-series/30859
 
I didn't compare HW with FG in this application, you could ask rb2013 which ones he prefers in this application since he tried both.
 
Good luck,
 
Alex

Hi Alex, I liked them both better then the Pannie FC's and way better then stock.  I seem to slightly prefer the FGs, but the HW's are totaly acceptable.
 
Just bought an iFi iDAC2 to use as a portable HP amp (with the Li Ion pack).  Very high quality components - saw these awesome Elna Silmic II's inside - I have used the brown version in my DAC60 mod project and really like them.   These black ones look very good  - will have to research were to find them.

 

[Sergey83149]

Dank Alex, rb2013!

 

[hawkhead]

Well now we know why mine failed when switched on for the first time ( I ordered 230V and the box says 230V)
 

 

[abartels]

  Well now we know why mine failed when switched on for the first time ( I ordered 230V and the box says 230V)
 

 
Thats exactly what I thought happened,, so it's supplier / manufacturers fault, they have to replace the unit for free.
I suppose they will send you pcb so you can exchange pcb.
 
Good luck!
 
Alex

 

[abartels]

 
Hi Alex, I liked them both better then the Pannie FC's and way better then stock.  I seem to slightly prefer the FGs, but the HW's are totaly acceptable.
 
Just bought an iFi iDAC2 to use as a portable HP amp (with the Li Ion pack).  Very high quality components - saw these awesome Elna Silmic II's inside - I have used the brown version in my DAC60 mod project and really like them.   These black ones look very good  - will have to research were to find them.

 
I received AK4495 DAC ( I2S - PCM - DOP ONLY - 768kHz MAX ) dac to test with, very good components they used for a $35 dac, only have to change the AD827 and the diodes 

2x LT1963, Nover - Elna - Nichicon FG - Wima caps, very impressive 

 

 

[ccschua]

my crystek just arrived. can I just use solder gun to solder the crystek to the board pins ?