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Hardware Teardown of Topping D30 DAC

Joined
Jun 20, 2018
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#41
That's right, I'm curious because whatever the reason is (cost, availability), they use different XMOS chips and oscillators with every revision, but in every other D30 board I've seen crystal oscillators are used, and the only one that's using silicon based ones is the 10.1, but they seem to be unidentifiable, be it intentional or not (some manufacturers offer that service on request, removing references from components). Anyway unless they are really poor it shouldn't be a problem, there are applications where phase jitter is far more critical than in audio (high speed/bandwith ones), contrary to many people beliefs.

Regarding the board I have exactly the same as the one you measured but with Capxon electrolytics, that I understand are just output caps for the voltage regulators, so if the values are as printed there shouldn't be any problem since they seem to be already over-specced.

Anyway the D30 is a pretty weird design by itself nowadays, since they could have used a more recent (non flagship) DAC chip with 384/768 kHz and higher DSD modes without increasing the price, although the same can be said for far more expensive gear (many Marantz products use CS4398, even their DAC1).
 
Joined
Sep 21, 2018
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#43
Just got warranty unit from dealership for my smoke out from L5-unit. It has repeated JLC going on top of the PCB etc. codes. Anyone else got similar unit? Also L/N is 1810 instead of 1807.
https://jlcpcb.com/about
" JLCPCB (Shenzhen JIALICHUANG Electronic Technology Development Co.,Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production "

fkqeosx33ac21[1].jpg
 
Joined
Jun 20, 2018
Messages
73
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27
#44
I have exactly the same revision and markings on mine, it seems to be the same one that amir has reviewed but with xunda instead of nichicon caps.

It seems that there are quite a few revisions, I don't know what's the latest one or the reason for so many changes, although I suspect it may be a combination of cost and component availability more than anything else.

Just got warranty unit from dealership for my smoke out from L5-unit. It has repeated JLC going on top of the PCB etc. codes. Anyone else got similar unit? Also L/N is 1810 instead of 1807.
https://jlcpcb.com/about
" JLCPCB (Shenzhen JIALICHUANG Electronic Technology Development Co.,Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production "

View attachment 20745
 
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