Hello
If I put a USB3 hub between the hard drive storage for my music files and the M-Dac on my Daphile pc's USB3 port will it effect the sound quality.
Thanks
thyristor44
If I put a USB3 hub between the hard drive storage for my music files and the M-Dac on my Daphile pc's USB3 port will it effect the sound quality.
Thanks
thyristor44
It will not affect the sound recorded on it.
You may get a slight, probably unnoticed delay, that's all.
Digital is digital.
You may get a slight, probably unnoticed delay, that's all.
Digital is digital.
If anything it will make it better, the mdac USB is poorly isolated. I can hear mouse moves and trackpad scrolling noise through mine.
My 2 cents you are hitting a ground loop between ground potential at the USB output of your motherboard and ground potential at your PC power input, looped some way to your amp. Not really a fault of any DAC, unless it were galvanically isolated from your PC. What is your setup from the POW of grounding?
No it hasn't improved the m-dac on usb input, it still has a low regular click about 3 secs when I run it on usb input. I do use a pcm2704 usb to spdif convertor and it seems the same with or without the usb3 hub. Will get better usb to spdif convertor when I find a cheap one.
Really nothing connected to the NTB, e.g. an external monitor?
I have experienced the keyboard and mouse sounds many times in various setups and always has it been a ground loop, caused by large ground currents running through motherboard ground traces between the soundcard or usb output ground connection somewhere on the board and the PC PSU input. In my case.
17" mac book pro, no external connected devices just a magic mouse. USB cable to dac, mac running on battery.
Its defo a psu rail issue from interface device irq breakthroug. Could be old caps on the main board letting noise through. Laptop has been turned off, 24/7 for ten years... and its never crashed, not even once.
Its defo a psu rail issue from interface device irq breakthroug. Could be old caps on the main board letting noise through. Laptop has been turned off, 24/7 for ten years... and its never crashed, not even once.
Do you have access to an alternative computer (OSx, Windows or Linux) and an alternative USB cable available so you can test ONE STEP at a time whether the problem carries on or disappears...?
I no longer use the dac, but it didnt do it on another laptop, usb cable made no difference and the mac didnt do it with my Weiss or my current rpi based stack.
It's a combo of poor noise isolation out of the mac and similar into the mdac.
It's a combo of poor noise isolation out of the mac and similar into the mdac.
quite intriguing... at least the MDac can be used on a different computer and the MAC is not adverse to another DAC...
Though Digital is Digital, but I do notice soundstage difference by using different hub.
For either USB Gen. 2 or 3, always the NEC/Renesas uPD7XXXX series are the best choice. Choose the hub based on uPD7 ICs, they will give you something better than others.
For either USB Gen. 2 or 3, always the NEC/Renesas uPD7XXXX series are the best choice. Choose the hub based on uPD7 ICs, they will give you something better than others.
Just my personal experience, OK?
"Better", in my system, means more details. I am sorry that I did not define "better".
Blinded tests were performed also, with 3 others of my friend.
But, I know, this is not even meaningful in statistics, not to mention "Statistical significance". So, yes, you can treat my experience as garbage.
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