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Stello U3: async USB to coax & AES/EBU transport <Impressions updated> - Page 15

post #211 of 278
Thread Starter 

The ratio story only matters if you run in hybrid APIC/HPET mode, which is not the case if your masterclock is 14,31818 MHz AFAIK.

 

You may wanna double-check with "clockres.exe" that Fidelizer is forcing 0.5ms resolution but I guess it should, and it might be a good idea to use the same kind of RCA/RCA male adapter as I did in the OP because cables can play tricks on ya IME.

 

PS: OMG, post 9999 evil_smiley.gif


Edited by leeperry - 1/29/13 at 1:25pm
post #212 of 278
Thread Starter 

So I just updated the firmware again, and just as I suspected you need the new firmware in order to be able to use >1.44 drivers but you can use any drivers version with that new firmware....either way, SQ is way different with the vanilla 1.22 or DM+ 1.43. I kinda have a hard time believing that SQ wouldn't change on a Mac, as claimed on that official forum post.


Edited by leeperry - 1/29/13 at 5:00pm
post #213 of 278
Quote:
Originally Posted by leeperry View Post

The ratio story only matters if you run in hybrid APIC/HPET mode, which is not the case if your masterclock is 14,31818 MHz AFAIK.

 

You may wanna double-check with "clockres.exe" that Fidelizer is forcing 0.5ms resolution but I guess it should, and it might be a good idea to use the same kind of RCA/RCA male adapter as I did in the OP because cables can play tricks on ya IME.

 

 

I'm actually using RCA to BNC adapter by Van Den Hul and BNC-BNC Naim DC1 digital cable. 

post #214 of 278
Have i been missing out on something? never experimented with this, neither heard anything of it. i dont have U3 right now, is this 0.5ms resolution related only with U3 ? if i have W4S DAC2 i dont have to be concerned with this millisecond resolution until i get U3 ?
post #215 of 278
Thread Starter 

A higher windows timer resolution is desirable for whatever that's timing related, some even claim that it forces device drivers to provide optimal results. You might find the computer snappier too.

post #216 of 278
Any minimal requirements for this not to downgrade notebooks performance? any other pros and cons ?
post #217 of 278
Thread Starter 

Of course there's a catch, it's that the higher the timer resolution the higher the power consumption...prolly only a few % extra(I've got a wattmeter, too bad I can't be hassled to check), but on a laptop it can matter and the average IE/Word/Excel PC user couldn't care less about benefiting from a lower OS jitter so if you multiply the power comsumption of all the computers in the world by only a few percents, then you can understand why Windows uses a very conservative 16ms regular timing and 10ms for A/V apps. 0.5ms could also stress the components prematurely, see it as an OS overclocking tweak of some sort(and there are many others).....but IMO/IME the pros are well worth the cons if you're an OCD'ed audio/videophile tongue.gif

 

FWIW, I asked madshi if he would consider this tweak for his killer video renderer and he agreed to force 0.5ms as well(just like Jplay does): http://forum.doom9.org/showthread.php?t=146228

post #218 of 278
Okay now you just got me curious, can you name some more tweaks for improveing sq ? smily_headphones1.gif you can pm me if you think its heading for OT
post #219 of 278
Thread Starter 
post #220 of 278

English release for the new firmware and driver:

 

http://www.aprilmusic.com/eng/bbs/bbsView.php?id=27&page=1&code=bbs_product_m

post #221 of 278
Quote:
Originally Posted by Patu View Post

English release for the new firmware and driver:

 

http://www.aprilmusic.com/eng/bbs/bbsView.php?id=27&page=1&code=bbs_product_m

 

Two files in there. Is the USB 2.0 update only applicable for those using Windows?

post #222 of 278

I just got the email about this. Thank you, Simon. I'm guessing this message board talk might have something to do with the fact that he got around to it. He told me told me he was very busy working on new products (understandably).

 

Comes with latest Thesycon 1.61 driver. Excellent.


Edited by robertsong - 1/31/13 at 10:51am
post #223 of 278
Quote:
Originally Posted by robertsong View Post

I just got the email about this. Thank you, Simon. I'm guessing this message board talk might have something to do with the fact that he got around to it. He told me told me he was very busy working on new products (understandably).

 

Comes with latest Thesycon 1.61 driver. Excellent.

 

New products understandably take time but you should never forget existing customers. I'm very happy that they finally released the new firmware and drivers. It shows that the customer support works, though little bit slowly. :)

 

I also got an e-mail from April Music since I've been contacting them every now and then about the driver update. 

 

Btw. 1.61 aren't the latest drivers, 1.63 are. You can read more about it if you browse back this thread.

post #224 of 278
Quote:
Originally Posted by robertsong View Post

I just got the email about this. Thank you, Simon. I'm guessing this message board talk might have something to do with the fact that he got around to it. He told me told me he was very busy working on new products (understandably).

 

Comes with latest Thesycon 1.61 driver. Excellent.


I thought the latest is 1.63

post #225 of 278
Thread Starter 

XMOS OEM clients have to package those Thesycon drivers to their own name and test them, much like major PC equipment manufacturers that always lag behind official nvidia/amd drivers versions for instance.

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