I think it is amazon at present, but our official online shop is under construction. I believe that will be the best and fastest in the future.What will be the best way to get your DACs in Europe? Thanks
I don't think that's limited to EDA, is it? I guess Altium?@Ben1987
Maybe a strange question, but what EDA software are you using?
Those rounded tracks are pretty!
When do you expect your online shop to be ready? ThanksI think it is amazon at present, but our official online shop is under construction. I believe that will be the best and fastest in the future.
@Ben1987 and @solderdude , thanks for confirming. It's clear from looking under the hood that the SONCOZ SGD1 is superbly well engineered. I'm very pleased with it so far. It will be replacing my Topping D50 which has been a long time favorite. I took some time to measure and plot the IMD versus level of the D50 which has the ESS hump and the SGD1 which doesn't.
I used REW to generate the SMPTE test tone at various levels and to calculate the corresponding IMD. I used the ADC on my MiniDSP SHD to make the measurements and I manually recorded the level and the corresponding IMD value. Then I plotted the results.
View attachment 45092
In the fat part of the hump the Topping D50's IMD level is close to 20dB worse than the SGD1. I never found the hump to be audible, but it's nice to know it's not there.
Is that output stage saturation at the end there?
I am sure that this is a problem caused by repairing the hump by hand, and it will be consistent in mass production.How did THD+N changed at 1Khz 0dbfs with the "hump" solved..I see 1-2 db increase in THD +N in your graph
Yes, It is the latest version of the fix.The best way to tell is to look at the capacitance, 2200 nF/220nF. Enjoy.
There are also signs of hand welding.
There are also signs of hand welding.
The modifications are done by hand. Original assembly is done automatically. He likely had a production run that he did not want to throw away if they could be fixed with minor changes after the fact.So are theses DAC's assembled by hand welding or are the boards done in a factory under a automated process
Wave soldering is the older method and is only used for "through-hole" assembly. This is when components have long leads that go through the board. Common method today is to use SMD (surface-mount) parts that are just placed on top of the PCB and hot air or similar method melts the solder right at the pads.Hi Ben,
So are these Dac's all hand welded (soldered) or are the pcb's wave soldered like this
Wave soldering is the older method and is only used for "through-hole" assembly. This is when components have long leads that go through the board. Common method today is to use SMD (surface-mount) parts that are just placed on top of the PCB and hot air or similar method melts the solder right at the pads.
Batch production is automatic production, manual part of the test work.So are these Dac's all hand welded (soldered) or are the pcb's wave soldered like this
Batch production is automatic production, manual part of the test work.
I noticed there is no option for choosing either grey or black model. Should we indicate color choice via message when placing order or will the option be available at a later time?
This is through Amazon.