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Old 10th October 2009, 04:08 PM   #1
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Default M2TECH Hiface USB->SPDIF 24/192Khz asynch

New USB->SPDIF interface from italian company M2Tech http://www.m2tech.biz/products.html

Got mine running for a week with very good results, sound wise is much better than my previous tas1020 based M-audio Transit.

Data is pumped from PC using asynchronous proprietary protocol over USB 2.0 full speed link, two oscillators are available for locally generated clock upto 192Khz.

I'll try tapping I2S from USB controller to SPDIF transmitter very soon, I'll keep you posted.

PS: beware that you lose warranty when you open it

Bye
Vale

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Old 10th October 2009, 11:09 PM   #2
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kernel streaming is the same as true asynchronous?
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Old 11th October 2009, 12:02 AM   #3
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Vale,

What is the cost?

dave
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Old 11th October 2009, 10:28 AM   #4
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Quote:
Originally Posted by sq225917 View Post
kernel streaming is the same as true asynchronous?
nope.. Kernel streaming is Windows mechanism for processing streaming data at lower latencies, bypassing kernel mixer and volume control.
AFAIH It's supported only in Winamp and Foobar.

and no.. KS does not automatically means asynchronous

HIface KS driver pumps out data to USB Controller using proprietary protocol which is in fact truly asynchronous.. Audio clock is not derived from USB or PC in any way, two local oscillators are used for this purpose.

Bye
Vale

Last edited by Valeriano; 11th October 2009 at 10:30 AM.
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Old 11th October 2009, 10:30 AM   #5
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Originally Posted by planet10 View Post
Vale,

What is the cost?

dave
Hi Dave

99euro + shipping

bye
Vale
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Old 11th October 2009, 11:25 AM   #6
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measurements?

The word Async goes a long way nowadays . -Unless its followed by SRC. -

I would like to see behind the hype, thanks.
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Old 11th October 2009, 12:45 PM   #7
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So it's only Async from the pc to the device, then after that its back to crappy old spdif, so whats the point?
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Old 11th October 2009, 12:48 PM   #8
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spdif with jitter below 100 should be enough for everyone. These crappy new DA converters were made with jitter in mind.
-no joke!-
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Old 11th October 2009, 04:55 PM   #9
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Thanx Vale. I have emailed them with interest (awaiting Mac OS X drivers)

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Old 11th October 2009, 05:51 PM   #10
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Originally Posted by tritosine View Post
measurements?

The word Async goes a long way nowadays . -Unless its followed by SRC. -

I would like to see behind the hype, thanks.
Hi tritosine.

you're quite right, it would be great to see real life measurements with a common methodology or by using a trusted third party.

In my case quite difficult being enduser of this stuff.

Comparative tests (trusted or not up to you) among common available usb/spdif interfaces available here http://www.head-fi.org/forums/f7/usb...hiface-449885/

AFAIH this unit pumps out data with locally generated MCLK using asynch way to refill local buffer.

cheers
Vale

Last edited by Valeriano; 11th October 2009 at 06:01 PM.
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