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Stello U3: async USB to coax & AES/EBU transport <Impressions updated> - Page 17

post #241 of 279
Thread Starter 

I read a little more about the differences between AES-EBU and S/PDIF and basically the balanced operation and lower noise floor would allow for a cleaner signal, hence a cleaner extraction of the clock.

 

Still not quite I²S worthy, but yeah, a short AES/EBU adapter is prolly as good as this is gonna get: imagebam.com

post #242 of 279
Quote:
Originally Posted by aivar1988 View Post

have been using U3 with kingrex psu for a few days now.. better bass and more dynamic sound.

This was my experience when I added the Aqvox USB power supply to my setup (which included your DAC at the time) as well. I actually thought the difference was a bit more noticeable than than the addition of the U3 in the first place.
post #243 of 279
Quote:
Originally Posted by driver 8 View Post


This was my experience when I added the Aqvox USB power supply to my setup (which included your DAC at the time) as well. I actually thought the difference was a bit more noticeable than than the addition of the U3 in the first place.


Can anybody recommend a good PSU for alternative USB power solution http://www.streakwave.com/Itemdesc.asp?ic=5VUSB

 

post #244 of 279
Quote:
Originally Posted by Andrew_WOT View Post


Can anybody recommend a good PSU for alternative USB power solution http://www.streakwave.com/Itemdesc.asp?ic=5VUSB

 

 

 

how about kingrex psu mk2 ? :)

post #245 of 279

Would you recommend buying this instead for $250?

 

Same specs, seems to be same hardware.

 

http://matrix-digi-usa.com/index.php?route=product/product&product_id=50
 

post #246 of 279
Thread Starter 

Well, they keep the most crucial feature extremely vague by stating "ultra low jitter dual-frequency clock" which basically doesn't mean anything. The PPM rating of the clocks in the U3 has been documented, so ask them to come clean? I know some companies that call 50PPM "ultra low jitter" evil_smiley.gif

post #247 of 279

that's a new convertor ali4ek

the specs look good and the same implementation as their highly-regarded X-Sabre DAC

you'd have to fine someone who's compared them directly

post #248 of 279
Quote:
Originally Posted by jtinto View Post

that's a new convertor ali4ek

the specs look good and the same implementation as their highly-regarded X-Sabre DAC

you'd have to fine someone who's compared them directly


Looks interesting, no BNC output though. :(

Interesting the driver version is 1.61, when the latest from Luckit is 1.63. Why most OEM package 1.61, 1.63 seems to sound better.

post #249 of 279

I have just gotten the iFi iUSBPower to pair with the Stello U3 and the result is phenomenal. The noise floor dropped tremendously and the overall sound is more detailed, clearer, cleaner and fuller. No coloration to the sound but pure technical improvement.

 

It is an external power regulator that cleans up the power that goes out of your PC into the Stello U3. Since the Stello U3 is a USB powered device, the cleanliness of the USB power line is crucial.

 

There have been other reported means to supply clean power to the Stello U3 but they all required as least some form of technical DIY skills or modifications to the hardware. Worse still, they are not cheap.

 

So, the iFi iUSBPower is suitable for those who has no modification nor any technical skills but wanted to have clean power that goes into powering the Stello U3. The best thing is that while this device performs exceptionally above my expectation, it is priced at an extremely reasonable price (I got mine for around USD190 and it comes with all the accessories needed to get it working).

 

I will highly recommend this to all those that are using or intend to get the Stello U3. It will transform the performance of your U3 greatly and has made my Mac Mini into a superb transport.

 

 

post #250 of 279

have you guys thought whats next thing to do, to improve the signal quality ? cleaner power source for notebook itself ?

post #251 of 279
Quote:
Originally Posted by aivar1988 View Post

have you guys thought whats next thing to do, to improve the signal quality ? cleaner power source for notebook itself ?

 

Hmm have thought of those, but not sure how to achieve it.

 

Signal quality (not sure if you meant signal strength or preservation of the original signal integrity) should be perfect given its a digital format. The Stello U3 is to reduce jitter and the iFi iUSB is to clean up the power line.

 

Notebooks are battery operated and there have been reports that the power noise has been worse than on Mac Mini which is AC powered. I think it depends on the 'stuffs' inside the computer.

post #252 of 279
Thread Starter 

Well, if you're on a Mac Mini and aren't afraid of the law of diminishing returns, this linear PSU should provide a nice SQ upgrade: http://www.clonesaudio.com/#!product/prd1/667867321/mpsu

post #253 of 279
Quote:
Originally Posted by leeperry View Post

Well, if you're on a Mac Mini and aren't afraid of the law of diminishing returns, this linear PSU should provide a nice SQ upgrade: http://www.clonesaudio.com/#!product/prd1/667867321/mpsu

 

I have seen such upgrades before but I am skeptical of it. It doesn't help that I cannot trial them and the selling price is high.

 

There are also people advocating the use of SSD for computer playback. However, software like Audirvana+ boasts of memory playback and all the benefits that could be brought about by the use of SSD are made redundant.

 

On a side note, I am very very satisfied and happy with the improvement brought about by the iFi iUSB. It really brings the Stello U3 to another league altogether. They will release a dual headed USB cable very soon that the iUSB is designed to work with at much more 'reasonable' price than other such cables, the most famous being the Acoustic Revive USB-1.0SPS.

 

post #254 of 279

Anybody looked at iFi iLink yet?

http://www.ifi-audio.com/en/iLink.html

post #255 of 279
Quote:
Originally Posted by leeperry View Post

Well, if you're on a Mac Mini and aren't afraid of the law of diminishing returns, this linear PSU should provide a nice SQ upgrade: http://www.clonesaudio.com/#!product/prd1/667867321/mpsu

i dont have mac, any options for HP compaq ? :p

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