[aethelberht]

Hello everyone! I am a new member of this wonderful community of which I have been a long time lurker. 
 
I want to know how I can update the version 1.22 driver that came with my U3 which is fed by my windows 7 64bit laptop and out to my JH3a/16. Thanks.

 

[leeperry]

Quote:

any options for HP compaq?

 
if that's a laptop, find a linear PSU with the right specs? Otherwise there are many linear ATX PSU's but they're pricey.
 
Quote:

Originally Posted by aethelberht /img/forum/go_quote.gif
 
how I can update the version 1.22 driver that came with my U3

 
U3 / DP1 PC USB port Firmware Upgrade

 
Quote:

Originally Posted by uelover /img/forum/go_quote.gif
 
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.

 
I think it's got more to do with noise pollution of the common computer ground as HDD's are very noisy due to their high speed motor and all.

 

[aethelberht]

Thank you, leeperry. I was expecting the update to solve my skipping and hiccuping issues. It happens every so often. Is that normal? Can it be completely removed? I am using JRiver 17, output ASIO mode. 

 

[leeperry]

Quote:

I was expecting the update to solve my skipping and hiccuping issues. It happens every so often. Is that normal? Can it be completely removed?

Do you ever get red bars with this app: http://www.thesycon.de/deu/latency_check.shtml ?

 

[aethelberht]

Quote:

Do you ever get red bars with this app: http://www.thesycon.de/deu/latency_check.shtml ?

I do get the red bars. Hmm. I guess I now have to disable devices one at a time. Is that the only solution -to isolate the misbehaving drivers one at a time?

 

[aethelberht]

Quote:

Do you ever get red bars with this app: http://www.thesycon.de/deu/latency_check.shtml ?

I've disabled every possible devices that can be disabled without hurting my system.. to no avail...

 

[leeperry]

Well, something's hijacking the DPC latency of your system for some reason....is it a laptop? Did you try killing all residents apps such as antivirus and so?
 
Troubleshooting can be tricky but there's another app that could help: http://www.resplendence.com/latencymon

 

[aethelberht]

Quote:

Well, something's hijacking the DPC latency of your system for some reason....is it a laptop? Did you try killing all residents apps such as antivirus and so?
 
Troubleshooting can be tricky but there's another app that could help: http://www.resplendence.com/latencymon

Yes, my system is a laptop: Windows 7 64bit, Intel Core Duo 2.53GHz, Mobility Radeon HD 4670.
 
Running LatencyMon, it reported that the highest ISR exe time was ataport.sys -ATAPI Driver extension while the highest DPC routine time was USBPORT.SYS.

 

[leeperry]

There are so many things to try:
-enable HPET
-update the mobo BIOS and try messing around with power management settings(S3 can be a problem IIRC)
-if you disable all USB hubs in the Windows device manager, no more red bars? If so, troubleshoot until you find the culprit.
 
Let us know

 

[aethelberht]

Quote:

There are so many things to try:
-enable HPET
-update the mobo BIOS and try messing around with power management settings(S3 can be a problem IIRC)
-if you disable all USB hubs in the Windows device manager, no more red bars? If so, troubleshoot until you find the culprit.
 
Let us know

I discovered the culprit: AMD Catalyst Controller. I uninstalled it and voila...audio can be enjoyed again. 

 

[leeperry]

good work

 

[robertsong]

Quote:

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.
 

 
Hi uelover, what are you using to power this cable? The iFi unit? Were you using a AQVOX before that?

 

[uelover]

Quote:

 
Hi uelover, what are you using to power this cable? The iFi unit? Were you using a AQVOX before that?

 
That cable has yet to be released in my country. I am using the stock USB cable that came with the iFi iUSB. Wasn't using the AQVOX previously. Is that compatible with USB 2.0 full speed, supporting all the different sampling rates?

 

[robertsong]

So you  are using the Stello U3 as the usb/spdif converter with the iFi as the dac? Sounds like the the new Gemini y cable and USB power unit would be your best bet.
 
http://www.ifi-audio.com/en/iUSB.html
 

 

[uelover]

Quote:

So you  are using the Stello U3 as the usb/spdif converter with the iFi as the dac? Sounds like the the new Gemini y cable and USB power unit would be your best bet.
 
http://www.ifi-audio.com/en/iUSB.html
 

 
iFi iUSB is NOT a DAC. It is a power regulator that stands between your computer and the Stello U3 (an USB to SPDIF converter) to clean up the power line. The Stello U3 is passively powered by the USB line power so it will benefit from a cleaner power source.
 
The DAC I use is Benchmark DAC1.
 
This is the diagram of the iFi iUSB that I posed just a few posts earlier. The I/O ports will tell you how it is supposed to work: