One chip is responsible for the streamer and usb.If there was a problem with it, absolutely nothing would work.Try logging into Windows \hardware and sound\devices and printers\hifiman ef499\properties, there should be no problem in the properties.If something is wrong, then you need to look at the router settings.They may not be suitable for the streamer, or the antivirus may block the network, but this is unlikely.Try connecting again via another PC.Thanks for your help and yes you are right, this is Hifiman's "quality", sadly I tried the Media Monkey app to connect, but it will never find the ef499 on my network, I tried with two cables and made no change
Measurements of the headphone output at 12 o'clock, no load.The low power level of the amplifier is selected in both cases.OS is a resampling.In OS mode, the dynamic range is 2 dB wider in high frequencies.For the rest, there is almost no change.It looks more like a filter than what it would be if using a high-quality installed asrc.But it costs money, so it's not here) It looks similar to tda1543.Why it was necessary to wipe the chip with sandpaper is not entirely clear.About the power.When the potentiometer is at 9 o'clock, this is about 70 dB, at 12 o'clock it is more than 100 dB at connected headphones fostex T50 rp mk3, it feels like.The amplifier here is more than good.There are questions about the DAC.It feels like it was deliberately made much simpler than it could have been, so that there would be no competition with other dacs of the company.No, it's not bad, but knowing what tda1543 is capable of, the result raises questions.
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