Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz - Page 102 - diyAudio
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Old 26th January 2015, 04:01 PM   #1011
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it would be nice to finally have some sound impressions comparative to other well known DACs and their implementations such as the TDA1541, PCM1702, CS4398, ES9023, ES9018, pcm5102, etc. ; I would be curios about a particular sound signature of this R2-R DAC compared to these other DACS from those who own or have listened to some of them
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Old 26th January 2015, 04:06 PM   #1012
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I am sure it will come

BTW: A really nice looking pcb with alot of very small parts arrived safe and sound at home today
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Old 26th January 2015, 04:12 PM   #1013
Can you say Audio?
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Soren - when do you expect your shipment for USA distribution will land in the states?
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Old 26th January 2015, 04:29 PM   #1014
alecm is offline alecm  Ukraine
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Soekris,
please find out what is going on with my order. I have paid Wednesday. But till now i haven't any reaction on my order and numerous letters to you and company. Thank you in advance.
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Old 26th January 2015, 05:13 PM   #1015
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Quote:
Originally Posted by alecm View Post
Soekris,
please find out what is going on with my order. I have paid Wednesday. But till now i haven't any reaction on my order and numerous letters to you and company. Thank you in advance.
Speaking for Soekris, he doesn't handle the actual orders, he has someone who takes care of that part of the business.

And many people put in their orders ahead of you, so I imagine you need to relax a little, and wait.
If you were not in the first group (I put my interest in last summer BTW), then you will have to wait for the 2nd batch of boards, 1st batch is sold out. This info is in the first post.

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Old 26th January 2015, 05:39 PM   #1016
ristar is offline ristar  Singapore
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This is his update with regard to those who ordered from the US store:

Post #885
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Old 26th January 2015, 05:54 PM   #1017
Stixx is offline Stixx  Germany
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Quote:
But till now i haven't any reaction on my order and numerous letters to you and company.
Sadly I have seen this over and over on Diyaudio when a new offer came out... people being all over the place and complaining, writing numerous(!) letters but not being able to just read a few pages of the thread and finding the important bits. It's not like you are shopping at Amazon, Mr.!
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Old 26th January 2015, 06:14 PM   #1018
TNT is offline TNT  Sweden
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Quote:
Originally Posted by soekris View Post
In principle any source should output zeroes when it don't have valid audio, if you need a "mute" pin then the source (read amanero) have a problem....

On the other hand the R-2R DAC shouldn't output anything without valid input data.... I'm currently muting by uC firmware, but that only check the input every 100 mS. There are supposed to be real time muting in the FPGA, but I had trouble with it, and as I otherwise didn't experience any problems with my setup (using a DIYINHK usb interface), I decided to complete that part later....

There is no direct mute input to the R-2R DAC, I just need to work on completing the FPGA mute circuit...
Okidoki. Just so you know - volume setting has no impact on blog level.

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Old 26th January 2015, 06:21 PM   #1019
TNT is offline TNT  Sweden
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Originally Posted by TNT View Post
If you look at the drawing Sören provided of the board, there is a box surrounding the inputs/outputs that is "isolated". None of these are used for galvanic or opto s/pdif.

- Galvanic s/pdif (shoild) use a transformer which is passive alas, no power needed.
- Opto requires a receiver module which is active and needs power - however as the glassfibre cable isolates the dad for outside, no isolation on-board is needed and this, the device can be seen to belong to the core DAC itself (the isolated part) so power should be taken from S2 but from pins outside the ISO box as these provide power (the ISO power must be fed power)

I only have USB possibilities.
//
Let me correct som spelling erros in this post. Forgive me my sloppy writing. It is affiliated with my weakening eyesight

If you look at the drawing Sören provided of the board, there is a box surrounding the inputs/outputs that is "isolated". None of these are used for galvanic or opto s/pdif.

- Galvanic s/pdif (shoild) use a transformer which is passive alas, no power needed.
- Opto requires a receiver module which is active and needs power - however as the glassfibre cable isolates the DAC from outside, no isolation on-board is needed and thus, the device can be seen to belong to the core DAC itself (the isolated part) so power should NOT be taken from S2 but from pins outside the ISO box pins as these provide power whereas the ISO power pins must be fed power)
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Old 26th January 2015, 06:24 PM   #1020
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Thanks mate - as it's the 'Monday' referred to in #885 (I think), was curious where board arrived in the US, and are still scheduled to start shipping today.

Not riled up mind you, just curious.

I have transformers inbound, along with the parts needed to complete the power supplies. Really looking forward to checking it out.

Quote:
Originally Posted by ristar View Post
This is his update with regard to those who ordered from the US store:

Post #885

Last edited by MisterRogers; 26th January 2015 at 06:27 PM.
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