CTheCurious
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- Joined
- Nov 21, 2021
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Hi everyone, I just want to expose a problem I have with my Topping E30, the way I temporary solved it and where I think I can get better. Plus I want to know your thoughts and opinions.
Configuration:
I plugged my DAC to 2 USB, obviously 1 for power and 1 for data, on a USB hub that has it's own powersupply and is connected to my PC. The output of the E30 goes to a DarkVoice 336S.
The problem:
I could ear a countinuos noise, not too high but definitely annoying. At first I thought the problem was the DarkVoice, but then I had the luck to test it with another source and the noise wasn't there at all, so I tried to work on the E30. I plugged a powerbank to it and it seemed to attenuate the problem but didn't solve it, so i tried to unplug the data USB and the noise disappeared. I then plugged a Toslink cable to the PC and DAC and now I'm fine. If I replug the power to the USB hub or to my PC the noise still reapperas, anyway I guess it may be a groundloop.
What I want to do next:
First I can't use the powerbank forever so I want to replace it with a decent 5v powersupply and this should solve one part of the problem.
Second, since the toslink has it's own limitations compared to USB, I want to find another solution to that as well. Even plug it directly to the motherboard didn't solve anything at all. I saw some USB Isolators and filters but I don't trust them too much.
This is the powersupply I was thinking to use.
Or maybe this one.
What do you think about it? What would you do/try?
Configuration:
I plugged my DAC to 2 USB, obviously 1 for power and 1 for data, on a USB hub that has it's own powersupply and is connected to my PC. The output of the E30 goes to a DarkVoice 336S.
The problem:
I could ear a countinuos noise, not too high but definitely annoying. At first I thought the problem was the DarkVoice, but then I had the luck to test it with another source and the noise wasn't there at all, so I tried to work on the E30. I plugged a powerbank to it and it seemed to attenuate the problem but didn't solve it, so i tried to unplug the data USB and the noise disappeared. I then plugged a Toslink cable to the PC and DAC and now I'm fine. If I replug the power to the USB hub or to my PC the noise still reapperas, anyway I guess it may be a groundloop.
What I want to do next:
First I can't use the powerbank forever so I want to replace it with a decent 5v powersupply and this should solve one part of the problem.
Second, since the toslink has it's own limitations compared to USB, I want to find another solution to that as well. Even plug it directly to the motherboard didn't solve anything at all. I saw some USB Isolators and filters but I don't trust them too much.
This is the powersupply I was thinking to use.
Or maybe this one.
What do you think about it? What would you do/try?
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