Sonore Async USB-I2S interface with onboard OSF - diyAudio
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Old 2nd August 2014, 07:33 PM   #1
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Join Date: Jul 2010
Default Sonore Async USB-I2S, DXD/DSD interface with onboard OSF

Hey folks, I wanted to introduce the new USB-I2S interface for DIY DACs from Sonore.

Features:

44.1-384 kHz capable
DSD 64 and 128 via DoP (4x and 8x DSD may be possible via ASIO native)
Asynchronous USB operation
Complete galvanic isolation from the serving computer
Ultra low phase noise oscillators: Crystek CCHD 957 Series
Output on micro BNC connectors for u.fl cables, and solder pads for direct wiring.
I2S and DSD output multiplexed to suit ESS based DACs
Advanced, onboard 8x oversampling filter using proprietary digital filters
Click the image to open in full size.

For ordering details go here:

SONORE USB Interface

And of course, further discussion is encouraged here.

Last edited by barrows; 3rd August 2014 at 07:36 PM. Reason: added photo
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Old 4th August 2014, 09:13 AM   #2
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Join Date: Oct 2004
Excellent product!
Now Amanero has a real challenger.
I think I first saw it in computeraudiophile forum.

I like the way you place the isolators in between USB Receiver IC and FPGA, much better than the usual post-FPGA/CPLD isolation practice.

Would you consider to release a lower cost version by replacing the pricey Crystek XOs to other XOs like NZ2520SD? It will make it more reachable to most diyer.
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Old 5th August 2014, 03:09 PM   #3
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Default Thanks...

for the kind words rredline.
This interface was borne out of frustration, as a USB interface with the performance and features we wanted for our Buffalo DACs was just not available.
Because Sonore already had a technology partner with the experience and skill to develop such an interface, we went ahead and developed it. Affordability was not part of the design brief: our goal was to produce the best performing interface which we could, first, for our own DACs. Then, we figured there would probably be some no compromise style DIYers who might be interested as well, so we decided to make some available for sale.
Yeah, we are aware of NDKs which have real world phase noise very similar to what the Crystek CCHD Series offer, but availability of the NDKs is a little trickier (yes it can be done) and our builder already had a supply chain inplace for the Crysteks.
Replacing the Crysteks with NDKs would not really make a big difference in the end cost anyway, maybe $20 USD less at most. Other parts on the board add up, and the development costs of all the specialized code have to be considered as well. Considering that the parts costs for this board is quite a bit higher than that for, say, a Buffalo DAC, I think the price is very reasonable.
In the end, the cost is what it is. Sonore is not making much at this price, and there are already a fair number of other options on the market if price is a more important concern than ultimate performance.

Last edited by barrows; 5th August 2014 at 03:11 PM.
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Old 1st September 2014, 02:45 AM   #4
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The interface looks very interesting. What drivers are required on Windows 8 64-bit? I can not seem to find any comments on drivers.
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Old 1st September 2014, 02:57 AM   #5
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Default Drivers...

The Sonore USB interface is USB Class II audio compliant so no drivers needed on OSX and Linux, personally I never use Windows for audio, but of course there is a Windows driver available for those using Windows. I believe the product page at Sonore.us should have the info on drivers and a link, if it does not, please contact Sonore directly and Jesus can provide the info which you need.
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Old 3rd September 2014, 03:30 AM   #6
Just DIY!
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This is really nice!
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PREAMPs : AMB α10 + JC-80 clone | Balanced DCB1 | LDR3x | AMPs: AMB β24 | Aleph 5 | VSSA | ML-2 | TSSA | Telos 390 Clone | My_Ref FE
DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
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Old 3rd September 2014, 03:38 AM   #7
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BTW, what I'm reading on this is it can multiplex the pinout for PCM and DSD without having to use relays or rewiring for BII? I'm asking since I have a an exD USB --> I2S that does it but wanted to know for another DAC. Seems like this design has better oscillators than my exD?

Thanks
Do
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PREAMPs : AMB α10 + JC-80 clone | Balanced DCB1 | LDR3x | AMPs: AMB β24 | Aleph 5 | VSSA | ML-2 | TSSA | Telos 390 Clone | My_Ref FE
DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
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Old 3rd September 2014, 04:08 AM   #8
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Default DSD-PCM

pinno: Yes. This interface was designed to suit the B-IIIse (and the B-II is the same, the B-III needs to have the jumpers configured the B-II way to multiplex DSD/PCM). So you can switch between DSD and PCM without the need for any relays or switches (yuk) in the I2S signal path, just 3 (or 4 for synchronous clocking) short U.FL cables.

Oscillators are the excellent Crystek CCHD 957 at 45.1584M and 49.152M, very low phase noise.

Last edited by barrows; 3rd September 2014 at 04:11 AM. Reason: added information
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Old 8th September 2014, 08:22 AM   #9
Crom is offline Crom  United Kingdom
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Congratulations Barrows and Sonore. This looks I like a no compromise solution using some nice components. A couple of questions:

Dual mono? Is it possible to fit a extra set of u.fl sockets, perhaps to the underside?

Has anyone compared the sound to waveio > Ian's FIFO project > bufallo? This is my current setup. Clearly there are some advantages here in terms of reduction in the number of power supplies, dedicated i2s interface (rather than inclusion of spdif too) and reduction in length of i2s signal path (and the associated number of joints) but wondering how any improvements actually manifest themselves.

Cheers
Crom
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Old 8th September 2014, 11:06 AM   #10
deanoUK is offline deanoUK  United Kingdom
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Location: Birmingham UK
Hi barrows,

I Emailed esonorejr@gmail.com twice last week asking for some more information.
No reply as yet.
I was asking -
Is there a manual ?
What is the pin out for J15 ?
Software updates via USB DFU ?
Availability ?
Shipping to the UK is rather expensive at $69. Is there a cheaper option ?

Cheers.
Dean.
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