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Shield SMSL SU-1 Powersupply (Nvidia Shield?)

guyboisvert

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There's a full set of tests on USB chargers a guy measured here if you want to see the cleanest source. I use the Samsung ETA0U60JBE which are 5V 700ma and enough for any DAC I've measured with a USB power meter when it's in use with both outputs going.
Unless bad engineering / bad design, shouldn't be affected by external power supply
 

Dunring

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If I plug a DAC into my monitor hub or a port on the gaming computer you can hear the interference if using on of the ports for power, even connected with optical. The Samsung has been measured for the same good performance as the Apple, without worrying about fakes of those they made for years.
 

gino1961

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Planing to use the SMSL SU-1 as a DAC and Nvidia Shield PRO as a streaming device. The SU-1 is powered through USB, so it will be getting its power from the Shield. In order to perform great, I understand any DAC needs a good powersupply..., and I wonder;
1. Do anyone know if the 5V output of the Nvidia Shield USB is "clean enough"?
2. If no; Is there any way to supply the SU-1 with a better powersupply? (split the usb into (+5/gnd) & (data) - letting the data be connected into the shield, while +5/gnd is connected to a higher quality PSU?)
Any thoughts on this?
Hi ! Thank you very much for this very interesting thread
Some years ago I bought one
I read p2571 model on the bottom of the unit
I didn't use it much at the time experiencing some issues during the updating procedure
Yesterday I found it in the garage and connected it via HDMI to the tv and then to the same smsl su1 DAC via toslink
I am amazed by the quality of the sound
Very very detailed but also musical
I can here very clearly the ambient sounds in some videos like being there
This thing is really good for sound even passing through the tv
The DAC is powered by a USB charger nothing high end for sure
 
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guyboisvert

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If I plug a DAC into my monitor hub or a port on the gaming computer you can hear the interference if using on of the ports for power, even connected with optical. The Samsung has been measured for the same good performance as the Apple, without worrying about fakes of those they made for years.
Can get ground loop using USB + unbalanced (RCA). Computers generate sometimes that kind of problems...
 

Toku

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Planing to use the SMSL SU-1 as a DAC and Nvidia Shield PRO as a streaming device. The SU-1 is powered through USB, so it will be getting its power from the Shield. In order to perform great, I understand any DAC needs a good powersupply..., and I wonder;
1. Do anyone know if the 5V output of the Nvidia Shield USB is "clean enough"?
2. If no; Is there any way to supply the SU-1 with a better powersupply? (split the usb into (+5/gnd) & (data) - letting the data be connected into the shield, while +5/gnd is connected to a higher quality PSU?)
Any thoughts on this?
Many of the members participating in ASR are very concerned about amirm's measurement results, but they show no interest in amirm's report that there is no problem with the DAC's operation even with a PC's USB power supply. That's a very strange reaction.

I have used SU-1, PO100AK, D10s, D10B, etc., and have never had any problems with the PC's USB power supply. Of course, I also tried external power supply during that time, but nothing changed.
 

gino1961

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I read once that has been always difficult to fight the voodoo with science
Just think of Galileo Copernicus and others
They risked their lives to promote science
I think that most people not only have difficulties in understanding science but even in accepting it
 
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