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PostPosted: July 27th, 2021, 11:22 am 
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Joined: February 19th, 2017, 9:43 am
Posts: 530
Description from eBay:

XY-R2R-XLR-V2 Network Decoder Board DAC Board 24Bit 384Khz PCM NOS R2R High-Precision Resistance

Description:
The whole decoder board uses CPLD as data processing. Because CPLD is parallel processing, it will not be serial processing like the peripheral logic chip, of which delay between all the gates will accumulate. The delay to the last data is very large. The resulting signal jitter cannot be ignored. Therefore, the R2R DAC developed by CPLD has advantages.

This decoder board has mid-tone accuracy, deep bass diving, and high-tone accuracy. The overall experience shows that the degree of separation is better than that of an integrated IC solution. (Under the premise of cooperating with our USB interface card).

This product adopts SMT industrial production, the components are neat and beautiful, and the solder joints are full and shiny. SMT production reduces manual reclaiming process and avoids soldering wrong components. Greatly improve the accuracy and precision of decoding. Good voice is ensured. Thanks to its lower price, enthusiasts can enjoy the treatment of large-scale machinery.

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PostPosted: July 27th, 2021, 11:36 am 
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Interesting, but the NE5534 opamps leave a bit to be desired. At least they are in sockets.

Would be interesting to compare them to the AKM AK4499EQ 32 bit balanced R2R ladder DAC's.


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PostPosted: July 27th, 2021, 11:56 am 
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Does the AKM chip have deep bass diving?

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PostPosted: July 27th, 2021, 12:07 pm 
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Not sure but The resulting signal jitter cannot be ignored!


DaveR wrote:
Does the AKM chip have deep bass diving?


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PostPosted: July 27th, 2021, 12:11 pm 
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Honestly, I think the last paragraph tells you all you need to know.

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PostPosted: July 27th, 2021, 2:23 pm 
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Location: Baltimore MD
Dave you are having just too much fun here.


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PostPosted: July 27th, 2021, 3:39 pm 
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DaveR wrote:
Does the AKM chip have deep bass diving?


Nope, the AKM's do not go into the deep end of the pool of bass. LOL!


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PostPosted: July 27th, 2021, 3:58 pm 
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Joined: March 12th, 2013, 11:45 am
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Location: Glen Burnie, MD
I wish to enjoy the treatment of large-scale machinery!


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PostPosted: July 28th, 2021, 11:05 am 
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Hope their manufacturing is better than the translation.

I've got a Chinese crankshaft and connecting rods in my engine.

Driving over them would be really bad for my health. Something about oiling down the road behind the engine, getting the rear tires into the oil at high speed......


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