TAS1020B-based Asynchronous USB to I2S/SPDIF converter 24bit/96kHz - Page 4 - diyAudio
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Old 9th March 2012, 04:34 PM   #31
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Location: Kraków
Hi All,

Jarek was out for few days because of his work duties. I know this from another forum. He should post something soon.

regards,
M.
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Old 10th March 2012, 10:21 AM   #32
JarekC is offline JarekC  Poland
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Location: Krakow
Hi all,
Sorry for the lack of response for several days. But I had a very urgent buisness job and I was a few days on business trip.

And now some answers:

Quote:
Guglielmo
I'm very interested in your board with the external clock and I2s output.
Can you generate also the clock for the dac?(ES9023 and ES9018)
I've also an SDtrans 384 but I think that your board can be an interesting option.
Yes. On I2S Connector there is Master Clock Signal (22.5792MHz or 24.5760 MHz depending on Fsample)

Quote:
korben69
Do you think your USB/I2S module could fed a WM8741 DAC input ?
WM8741 accepts direct I2S signals.

Would it work with an Opus DAC ?

My knowledge is weak, but Opus I2S input works in "slave mode".
The USB/I2S module is supposed to generate the master clock.
Will your module do the job ?
YES. I2S signal have standard format (24Bits, Master Clock=256*Fs).
Converter is MASTER, DAC is SLAVE.
On I2S Connector there is Master Clock Signal (22.5792MHz or 24.5760 MHz depending on Fsample)

Quote:
nullspace
Any luck getting 22.5792 Mhz and 24.576MHz clocks? I'd like to buy a Stage 3-spec board, assembled & tested, once they become available.
YES. Last week I received oscillators (20ppm).
I think that next week converters will be ready.
I solder converters by hand, I need about 2 hours to assemble one.
I do it in my leisure time.

Quote:
kevinkr
This is a subject that has recently become of great interest to me, and look forward to the availability of your TAS1020B version. If you plan to offer boards in the future or have any left I would be very interested in acquiring one.
YES i plan to offer assembled boards. But at this moment I have only few PCBs and I solder them hand. So I do them only a few pieces.
Now they are mainly intended for DIY-ers from Poland. I plan to send outside Poland but I have to check shipping costs and create PayPal account.

Quote:
robertopisa
are you aware whether your TAS1020B version supports integer mode when using players such as Audirvana and PureMusic?
Unfortunately, I do not know these programs. I tested converter on Mac Os and it works fine, you don't need any additional drivers. Converter is fully compatibile with USB Audio Class 1.0.

Quote:
GeorgeBoudreau
Golledge in the UK has some nice clocks that are inexpensive in qty of 500
500 pcs is far to much. I bought several pieces from another source. Thanks.

---------------
I also received PCB for galvanic isolation based on ADUM3160.
I soldered and tested one it's works realy fine.
Photos on monday.

On the Polish Forum DIY we plan to compare the different converters:
- My
- V-Link
- Hi-Face
- Hegel

Sometimes I have roblems with writing in English what I think. My english is very poor.

Best regards
JarekC

PS.
For private messages I will try to answer by the weekend.
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Old 10th March 2012, 08:31 PM   #33
kevinkr is offline kevinkr  United States
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Hi JarekC,
Your English is quite good actually, and with regular usage will get even better.

I'm very interested in your board, and will buy one as soon as it is available - just let me know.

You might consider providing the right footprint and socket for the Tent Clock (Guido Tent) and let buyers source their own if they wish to use it - enabled by jumper I suppose.

I've bought stuff from Poland and paid via paypal before and it all worked just fine, so I've no reservations.

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Old 10th March 2012, 09:55 PM   #34
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hi JarekC

Glad to hear your response about the development of the converter.

May I know while performing initial test on the board did you use any software interface for interaction between the converter and the computer ?

Are you using ASIO or WASAPI or any kinda software ???

Regards
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Old 11th March 2012, 04:39 AM   #35
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Join Date: Oct 2008
Hi Jarek,

thanks for the reply. I own the Hiface, you have to feed it with good DC, not the 5V USB, to make it sound good for the comparison. It would be interesting also to compare against Stello U3 or Anedio (XMOS based interfaces).

As for Audirvana Plus and Pure Music, you can download a trial version.

Cheers
Roberto

Quote:
Originally Posted by JarekC View Post
[snip]

On the Polish Forum DIY we plan to compare the different converters:
- My
- V-Link
- Hi-Face
- Hegel

[snip]
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Old 20th March 2012, 02:27 PM   #36
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Join Date: Mar 2012
Hello JarekC,

Can you post a link to the store / forum where I can buy the kit? I am very interested.

Kind regards,

Haik
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Old 20th April 2012, 01:47 PM   #37
JarekC is offline JarekC  Poland
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Location: Krakow
Hi All,

I received a new batch of PCB (15pcs), all previous (about 20) been used by Polish DIYs.
I finally found some spare time to assemble a few pieces of converter.

The biggest improvement over the standard version (Stage1/2) happens after adding external oscillator and external power supply.
Adding galwanic isolation gives subtle changes.

The current version is 1.01 for I2S/SPDIF standard and 1.02 for version with external oscillators.
Achematic is available inn first post.

Several people have asked me about costs:
USB to I2S module (STAGE1 specification, assembled & tested)
cost about 44$ + shipping (about 7$ in EU)

USB to SPDIF(COAX+OPTO) module (STAGE2 specification, assembled & tested)
cost about 60$ + shipping (about 7$ in EU)

Options cost:
-external oscillators + (additional parts) 25$
-galvanic isolation module 18$

But I can assemble only 4/5 units per week.
I solder converters by hand, I need about 2 hours to assemble one. I do it in my leisure time.
Sometimes I have to go on business trip.

On fist photo (from left) :
1. SPDIF(COAX+OPTO) + OSC + ISOLATION
2. SPDIF(COAX+OPTO) + OSC
3. SPDIF(COAX+OPTO) standard

On second photo: galvanic isolaton module

Best regards
JarekC
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Old 20th April 2012, 02:37 PM   #38
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Hi JarekC,

I sent you a PM. Very nice looking kit. Thanks very much for your efforts and making these available.

Regards,
John
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Old 21st April 2012, 01:27 AM   #39
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Hi JarekC,

PM send to you.

Regards
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Old 23rd May 2012, 09:31 PM   #40
JarekC is offline JarekC  Poland
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Location: Krakow
Hi,

First converters sent to diyaudio users.
So waiting for the delivery and review.

Best regards
JarekC
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