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Old 25th November 2012, 06:32 AM   #921
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Quote:
Originally Posted by luxury54 View Post
Hi,
I would like to adress a question to the old users who already purchased this device in the past and are able to give me an answer based on their experience :
Does this board output bitperfect data? I mean is it upsampled or modified in any ways using different algoritms perhaps?
My other question is what standard is the I2S stream that it outputs? is it compatible with the old philips I2S format or is it the newer Sony I2S format?
I am asking all these because I would need it mostly for a NOS TDA1541A DAC that accepts only 16 bits, 44khz so I would have no need of 24 or 32 bits, but I would need it to be bitperfect on 16 bits only - if it outputs 24 bits that means TDA DAC chip would receive the signal already truncated? Is there anyone using this DAC with this setup so can give me a clear confirmation?

Many thanks in advance!

searching a bit on this thread I found myself the answer for the question I rised, coming from Owen in this posting

USB to I2S 384Khz - DSD Converter

"I also tried and failed to get bit-perfect operation under WASAPI and Win 7 the other day. Using the Audio Precision Bittest, direct I2S out to the AP, and connected to a Windows 7 PC using J River there doesn't seem to be any way to get bit-perfect reproduction.

Every other USB card I have tried with ASIO drivers (Musiland, XMOS, exaU2I) worked perfectly in this setup with an error rate of 0 even after several hours of running."
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Old 25th November 2012, 09:10 AM   #922
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after exchanging a few PMs, it seems that the amanero board with the latest driver and firmware and using Kernel Streaming (not Wasapi) is bit-perfect.
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Old 25th November 2012, 02:16 PM   #923
mksung is offline mksung  Taiwan
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When I have used 1.56 driver that foobar2000 kernel stream output left and right reversed ? Dose any one have same issue?
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Old 25th November 2012, 03:09 PM   #924
qusp is offline qusp  Australia
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read the thread please, short answer is yes it has been noticed and AFAIK fixed
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Old 25th November 2012, 04:18 PM   #925
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Perhaps mksung and me are the only people that have (or noticed?) the problem. Same reversing channel over KS ... No, it has not been fixed with 1.056, specifically over KS
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Old 25th November 2012, 04:37 PM   #926
qusp is offline qusp  Australia
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well for many it has been fixed, so I think its more likely down to either your particular computer setup, or your dac connections

if you read the last 10 pages, as well as glt's blog (hifiduino) you will see the issue discussed at length, you are far from the only 2 who have come across the problem, perhaps just the only 2 not to have read about the solution or realized it has been mentioned many times

edit: as seen below it seems I too spoke too soon, its fixed me and many others, guess it must be a conflict somewhere for some people.

Last edited by qusp; 25th November 2012 at 04:58 PM.
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Old 25th November 2012, 04:53 PM   #927
amanero is offline amanero  Italy
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Hello, i m sorry for the incovenience but there was a reset problem between the windows driver and the combo384 firmware.

In the 1.55 firmware there was a fix to accept a reset command from the driver but this command was ignored during DSD/PCM switch.

Now i uploaded a firmware 1.56 that fixes the reset command sent by the windows driver during DSD/PCM switch.

Let me know if it's all ok.

Thanks,
Domenico
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Old 25th November 2012, 04:58 PM   #928
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Its OK now Domenico, many thanks.
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Old 25th November 2012, 05:09 PM   #929
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Quote:
Originally Posted by qusp View Post
well for many it has been fixed, so I think its more likely down to either your particular computer setup, or your dac connections

if you read the last 10 pages, as well as glt's blog (hifiduino) you will see the issue discussed at length, you are far from the only 2 who have come across the problem, perhaps just the only 2 not to have read about the solution or realized it has been mentioned many times

edit: as seen below it seems I too spoke too soon, its fixed me and many others, guess it must be a conflict somewhere for some people.

Yep! that was excactly the case! no worries though, better to speak soon than never speak at all.
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Old 25th November 2012, 08:14 PM   #930
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Flashed the latest firmware and DSD now play again. Thanks Domenico.

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