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Perfect Wave DAC Owner Unite - Page 46

post #676 of 1162
6/17/12 at 3:01am
Quote:
Originally Posted by GMF2010 View Post

I'm pretty bummed. While I was changin power cables, I noticed there was a screw on the PWD'a back panel that as ready to fall out. I tried to open the case, but I don't have the stand off pins, seeing as my PWD was factory mk II'd. After a call to PS Audio, they told me to ship the PWD back so they can fix the screw issue and make sure the loose nut hasn't shorted anything out (as well as make sure nothing else is loose). Being DAC-less isn't going to be fun!

Good morning to all.
I signed up here because of my new purchase: PWD mkII.
I also at this time, due to a fault on my DLIII, are without the dac. Rather listen to music directly from the analog output of the touch .... what about the music is flat with no soul.
So I decided to do an upgrade to PWDmkII! The DAC has to come to my house a few days.
Meanwhile I have a question for this community. Is preferable to use the coaxial input, using the convenience of touch-SB, or the much acclaimed usb input from my iMac (which is however a few meters from the dac)?
I noticed that many of you use SB Touch.
Regards,

Marcello

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post #677 of 1162
6/17/12 at 12:43pm
Thread Starter 
I much prefer the coaxial over the USB.
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post #678 of 1162
6/18/12 at 8:39pm
Quote:
Originally Posted by jc9394 View Post

I much prefer the coaxial over the USB.


X2.

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post #679 of 1162
6/20/12 at 10:52am

But isn't drastically improved USB the meat of the mk2 kit?

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post #680 of 1162
6/20/12 at 10:53am
Thread Starter 
Quote:
Originally Posted by Mr.Sneis View Post

But isn't drastically improved USB the meat of the mk2 kit?


yes, but still behind coaxial.

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post #681 of 1162
6/20/12 at 7:40pm

What transports are you guys using to supply the Coax? Has anyone compared the Bridge connection to the Coax?

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post #682 of 1162
6/20/12 at 7:48pm
Quote:
Originally Posted by Mr.Sneis View Post

But isn't drastically improved USB the meat of the mk2 kit?

 

The mk2 kit improves all inputs too I thought.

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post #683 of 1162
6/21/12 at 2:30am
Quote:
Originally Posted by Anaxilus View Post

The mk2 kit improves all inputs too I thought.

I think that is true. I use the coax (Halide Bridge) and the I2S (PWT) inputs and both improved with the mark II upgrade in the Native X mode. I may be mistaken, but i thought that when using the Native X mode, all inputs pass through the digital lens that reduces jitter and resultantly improves the sound.
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post #684 of 1162
6/21/12 at 7:01am
Thread Starter 
Quote:
Originally Posted by GMF2010 View Post

What transports are you guys using to supply the Coax? Has anyone compared the Bridge connection to the Coax?

 

I use an old Sony S7700 DVD player as transport, it sounds very good but not even close to PWT.  Since my transport can't play SACD and I'm too lazy to change disks, I use the Bridge much more than other inputs.  The Bridge is still not as good as coaxial but very close, I can't tell the difference unless I'm critically listening at night.

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post #685 of 1162
6/21/12 at 5:21pm

Does anyone have info or a link to the details of the USB implementation in the mkII?

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post #686 of 1162
6/21/12 at 5:51pm

Other than the marketing boilerplate on their website, just that they use one of those XMOS chips. Asynchronous, 192/24, buzzwords, et. al. It looks like the XMOS USB driver has been customized for PS Audio, so the user never sees the mention of XMOS. The file "tusbaudioapi.dll" is a dead giveaway for the XMOS implementation.

 

Here, you can buy one of their eval kits: http://www.xmos.com/products/development-kits/usbaudio2


Edited by purrin - 6/21/12 at 5:57pm
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post #687 of 1162
6/21/12 at 5:58pm

Thanks, purrin, that's very helpful.  I wonder how much thought they've actually given to the USB implementation.

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post #688 of 1162
6/21/12 at 6:07pm

Well, they gave it enough thought to throw it over the fence to XMOS (a known and established solution for hires USB) rather than do it themselves (we all know  what happened with the Bridge.)

 

I assume the XMOS thingie outputs via I2S into an I2S receiver, and then into their Digital Lens (based on their Genesis DL tech), and rest of the DAC takes it from there.

 

Think of it as Lego building blocks. 

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post #689 of 1162
6/21/12 at 8:31pm

Was mk1 adaptive or asynch?  For some reason I thought it was adaptive, but not sure.

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post #690 of 1162
6/21/12 at 8:33pm
Thread Starter 
Quote:
Originally Posted by The Monkey View Post

Was mk1 adaptive or asynch?  For some reason I thought it was adaptive, but not sure.

 

Yes it was adaptive.

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