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Old 21st August 2017, 10:47 PM   #1
ZoSoNCSU is offline ZoSoNCSU  United States
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Default Can Delete/Close Thread (ES9028Pro Found)

ES9028Pro Found! No longer needed. Can delete this thread.

I sort of got screwed/confused by a Chinese Ebay seller who never requested payment for the ES9028/ES9028Pro primary IC and just shipped the incomplete DIY kit, but they included the R-Core transformer! Basically they sent me everything needed to run the DAC except the main IC for the DAC... haha. They even sent me a message asking me about which IC and I told them the ES9028, but they sent me a blank board without ever asking for payment.. We had 3 or 4 messages back and forth and this still happened.

What makes this even better is the very first message I sent to this company/person was to ask if they would solder the main IC for me and leave the rest. Well, they soldered random SMD components which I can easily do.. I even told them I don't need their op-amps if that could be offset with better alternatives for my other parts I do need. It's like none of this registered the whole time and the main Ad says nothing about missing cost of IC in the cost. I have no problem soldering in this kind of IC with SMD parts as I do have a hot air re-worker and I can do it with a standard iron too. Have flux and soldering paste along with ChipQuik.

I was wondering if anyone has any idea of the best place to get an IC like the ES9028, that is the one I was going for. I have seen ES9028Pro's going for $70 on Ebay, but my upgraded LED display kit needs the ES9028 to work properly according to the seller. Or perhaps someone with an ES9028 is looking to jump to the 9038, I would definitely take a used model for a reasonable price (say ~$40 obo) to help out on paying for the ES9038.

Below you can see pictures of the PCB without the main IC and I included grabs of the ebay seller because I have seen them disappear many times.

Note: The very first picture of the PCB is one I took and is what I am working with.
Attached Images
File Type: jpg 08219984smaller.jpg (342.0 KB, 299 views)
File Type: jpg ES9028 DAC Schematics-l1600SMaller.jpg (259.0 KB, 295 views)
File Type: jpg Website.jpg (874.2 KB, 288 views)
File Type: jpg Untitled-8.jpg (303.9 KB, 265 views)
File Type: jpg Untitled-7.jpg (323.6 KB, 272 views)
File Type: jpg Untitled-6.jpg (304.2 KB, 106 views)

Last edited by ZoSoNCSU; 22nd August 2017 at 07:42 PM.
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Old 21st August 2017, 11:51 PM   #2
ZoSoNCSU is offline ZoSoNCSU  United States
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Do they make fakes or is it really possible a genuine ES9028 is installed in a $18 piece of hardware?

NEW HiFi Assembled ES9028 I2S input decoders ES9028Q2M mill board DAC | eBay

If that is real I can just remove it and put it on mine for less than $20.

You can't see the pins like you do on the $80 new model for ES9028Pro

Any thoughts on this?

(Few more pics of what I do have)
Attached Images
File Type: jpg 08219983smaller.jpg (313.9 KB, 112 views)
File Type: jpg 08219989Smaller.jpg (295.6 KB, 102 views)

Last edited by ZoSoNCSU; 22nd August 2017 at 12:02 AM.
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