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New XMOS Multichannel PCB
New XMOS Multichannel PCB
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Old 1st May 2016, 03:43 PM   #21
rootscript is offline rootscript
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Join Date: Dec 2015
Ok so just to recap over the 2 different version mentioned:

The blue one called: XMOS 768kHz DXD DSD512(DSD1024) high-quality USB to I2S/DSD PCB
Click the image to open in full size.
- 4 layer PCB, Ultra low phase noise oscillator
- Support up to 768kHz PCM and DSD512(DSD1024*)
- Using NDK NZ2520SD Ultra low phase noise oscillator

And the green one is called: XMOS Multichannel high-quality USB to/from I2S/DSD SPDIF PCB
Click the image to open in full size.
-4 layer PCB, Ultra low phase noise oscillator
-Up to 32 channels or 384kHz with different firmware

Are there any other differences?
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Old 4th May 2016, 02:56 AM   #22
diyaudnut is offline diyaudnut  United States
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Quote:
Originally Posted by Dimdim View Post
AFAIK with the firmware that comes with the board there is no way for it to receive an external MCLK. You have to use it pretty much as-is.

I suspect that XMOS provides the tools necessary for creating a custom firmware that could support external MCLK, but I also suspect that actually making such a firmware would not be easy.

Isolation & reclocking should not be a problem. We are talking about standard I2S lines.
Hi Dimdim,

do you know if 32-bit multichannel is possible at 192KHz? This would be optimal for digital volume control on the ES9018
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Old 4th May 2016, 08:20 AM   #23
Dimdim is offline Dimdim  Greece
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New XMOS Multichannel PCB
I'm not sure. I know that for 8 channel out you will need to order the board with that specific version of the firmware.

I myself haven't done any multichannel testing, since DIYINHK claimed that it was only supported on Win 7 or Linux.

Now I see that they have a new driver out (v3.34) which they claim supports multichannel PCM.

But I believe that DIYINHK can tell us what is actually supported..
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Old 4th May 2016, 03:00 PM   #24
HpW is offline HpW
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Quote:
Originally Posted by Dimdim View Post
I'm not sure. I know that for 8 channel out you will need to order the board with that specific version of the firmware.

I myself haven't done any multichannel testing, since DIYINHK claimed that it was only supported on Win 7 or Linux.

Now I see that they have a new driver out (v3.34) which they claim supports multichannel PCM. But I believe that DIYINHK can tell us what is actually supported..
Currently using the V3.34 driver using miniDSP USBStreamer:

- 10 channel I/O (8 I2S I/O, 2 SPDIF I/O) only on ASIO
- 2 Channels (2 I2S) only on WASAPI Exclusive

And hopefully DIYINHK is on this web more specific what they really support!

Also not clear is, whether SPDIF I/O on 192khz is working or not... (while USBStreamer simple do not work at this 192khz SR)

Hp
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Old 11th May 2016, 07:53 AM   #25
diyinhk is offline diyinhk
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Quote:
Originally Posted by HpW View Post
Currently using the V3.34 driver using miniDSP USBStreamer:

- 10 channel I/O (8 I2S I/O, 2 SPDIF I/O) only on ASIO
- 2 Channels (2 I2S) only on WASAPI Exclusive

And hopefully DIYINHK is on this web more specific what they really support!

Also not clear is, whether SPDIF I/O on 192khz is working or not... (while USBStreamer simple do not work at this 192khz SR)

Hp
the multchannel xmos can do 44.1-192K spdif out
the 768k xmos can do 88.2-384k spdif out, it is mentioned inside the 768k xmos item description. The spdif out signal is reclocked by the low phase noise oscillator directly and the signal quality is guarantee
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Old 11th May 2016, 07:56 AM   #26
diyaudnut is offline diyaudnut  United States
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diyinhk,

can this do 32-bit or is limited to 24-bits?
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Old 11th May 2016, 07:58 AM   #27
diyinhk is offline diyinhk
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Join Date: Sep 2012
Quote:
Originally Posted by Dimdim View Post
I'm not sure. I know that for 8 channel out you will need to order the board with that specific version of the firmware.

I myself haven't done any multichannel testing, since DIYINHK claimed that it was only supported on Win 7 or Linux.

Now I see that they have a new driver out (v3.34) which they claim supports multichannel PCM.

But I believe that DIYINHK can tell us what is actually supported..
We have ES9016 8 channel DAC PCB xmos combo, it can do 8 channel 192k playback. It is a standard USB Audio device, any operating system support standard USB Audio device should also work without any problem.
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Old 11th May 2016, 08:01 AM   #28
diyinhk is offline diyinhk
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Join Date: Sep 2012
Quote:
Originally Posted by jojip View Post
diyinhk,

can this do 32-bit or is limited to 24-bits?
The default firmware always output I2S signal at 32bit. i.e. BCK=64X LRCK
The item description includes a table shows all the i2s signal sampling rate frequency.
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Old 30th May 2016, 06:11 PM   #29
alexanderbax is offline alexanderbax
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Join Date: May 2015
Ok, so could you develop say a 2-way or 3-way digital active crossover on a PC (on Windows 10), then run it via USB in to the XMOS board to convert to I2S, and finally from I2S to say a DIY multichannel Buffalo III DAC? Or even could you use one XMOS board to accept multichannel USB audio, and then run the I2S outputs BACK in to two further XMOS boards to create 2 separate USB outputs (for a 2-way active crossover) to run in to say two Chord Hugos?
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Old 7th June 2016, 01:52 PM   #30
Rixsta is offline Rixsta  United Kingdom
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Join Date: Feb 2004
Location: Barrow-In-Furness, Cumbria
New XMOS Multichannel PCB
Im wondering about using this device along with Buffalo III DAC in order to create a multitrack recording device for the PC for my own recordings. how feasable would my idea be ?

The Buffalo III DAC has 8 channel inputs.
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