Use the software from piCorePlayer and select the I2S output, then you know the problem is there or not.
Has anyone else been able to use an Airport Express as an optical source? I am using the TOSLINK module from Twisted Pear, and it works fine with my AppleTV, but when being used with the Airport Express the signal keeps getting lost and locked again.
The AppleTV seems to output a signal at all times while the Express only outputs when it's being told to play music. I thought maybe it was an issue with wireless interference, so I hardwired the Airport Express and my laptop to the network but the issue still occured.
I swear this was talked about here/elsewhere before but I can't for the life of me find the conversation!
The AppleTV seems to output a signal at all times while the Express only outputs when it's being told to play music. I thought maybe it was an issue with wireless interference, so I hardwired the Airport Express and my laptop to the network but the issue still occured.
I swear this was talked about here/elsewhere before but I can't for the life of me find the conversation!
Hi All, i have been on the fence for a long time to try the Dam/ R2R dac. Most of the this thread/ forum is about technical details. I would appreciate if some one can compare or provide a link where this DAC has been compared to some what comparable dacs from Audio GD/ Schiit ec. thanks
Much of the comparisons are opinions rather than anything else. The fact is the dam1021 is just a single component of a full setup and whatever other components or mods you choose do have an impact on the final outcome.
The vref mod is one of the most important factors in said outcome and we are still discovering new things about how it should be approached, such as impedance matching throughout the frequency range.
I'm also hovering close to purchase and taking notes on the thread. While it has been worth waiting for e.g. the Rev 2 boards, you can't wait forever.
There are new boards being made - like the OEM version. I'm just wondering what's the best time to commit. Are there new mods round the corner from November on?
There are new boards being made - like the OEM version. I'm just wondering what's the best time to commit. Are there new mods round the corner from November on?
I'm also hovering close to purchase and taking notes on the thread. While it has been worth waiting for e.g. the Rev 2 boards, you can't wait forever.
There are new boards being made - like the OEM version. I'm just wondering what's the best time to commit. Are there new mods round the corner from November on?
There are new boards being made - like the OEM version. I'm just wondering what's the best time to commit. Are there new mods round the corner from November on?
@meldano,
did you try it?
My dam1021 seems to have the same problem since yesterday noon. But not at every power up. :-|
did you try it?
My dam1021 seems to have the same problem since yesterday noon. But not at every power up. :-|
I have bought a board yesterday. I guess after V2 there will be no new versions soon.
I agree that there are not much comparisons... but that what Soekris states in his first post (...better than any sigma-delta dac...) is not being denied by a lot of people also 🙂
For the new revision boards does the firmware and default filters are pre-installed or do we need to install them after powering them using RS232 serial ports?
Mods from who? SOEKRIS or DIYers? I think SOEKRIS has responded to discoveries from folks on this thread before looking into how he will do things. A very good collaboration considering this, for him, is a hobby within a serious business. So, your question is impossible to answer.
Personally I hope there are more interesting discoveries but I would not expect those to be blended into SOEKRIS production very quickly.
One can buy a revised board and be happy with it or dive into the mods and be very happy. One cannot deny there is good value for the money spent. Mixing little labor (and money for better supplies, etc.) of your own and you can have something that you will enjoy.
Thanks Rick - I read a lot of your posts. I meant mods from Soren. I'm aware that he values the feedback from users and acts on it. I presume that with Rev 2 fresh out there will be some wait for any kind of Rev 3. Only question I guess is whether the OEM board will be made available to DIY-ers in any form.
It's very hard to make an apples-to-apples comparison since I'm pretty sure that there are no two DAM implementations that sound 100% the same.
My DAM implementation manages to sound different from a friend's implementation, even though we are using 99% same parts (same USB interface, same Vref mod, 95% same Salas BiB PS, same filter, etc).
Still, I hear that his implementation easily beat an Yggdrasil the other day. And he has a 0.05% board.
My DAM implementation manages to sound different from a friend's implementation, even though we are using 99% same parts (same USB interface, same Vref mod, 95% same Salas BiB PS, same filter, etc).
Still, I hear that his implementation easily beat an Yggdrasil the other day. And he has a 0.05% board.
The oem board, if I understand this correctly, uses even smaller components so it will be even more difficult to work with as a hobbyist. I think the DIYer board would be what you want.
I can see the advantage of smaller components but one would think 0603 resistors are plenty small!
My respectful guess would be a Rev 2 board in the hands of someone keeping up with the "program" would likely be far ahead of a Rev 3 board when such a thing becomes available.
Double check the I2S connections. The 3.3V isolators on the DAM must be powered.
Here is my RPI2, connected to to the DAM, cross reference this to the wiring diagrams posted earlier.
The green signal lock light is steady in this picture.
I'm using raspi 2 as audio i2s output, when I playback 384KHz file, the BCLK period time varies between ~40ns & ~42ns, just like below pic from logic analysis instrument.Does the i2s signal pass through dam1021's fifo, the jitter reduction mechanism can make it back exactly 384KHz?
Or should I add a fifo board before dam1021?
Or should I add a fifo board before dam1021?
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I'm using raspi 2 as audio i2s output, when I playback 384KHz file, the BCLK period time varies between ~40ns & ~42ns, just like below pic from logic analysis instrument.Does the i2s signal pass through dam1021's fifo, the jitter reduction mechanism can make it back exactly 384KHz?
Or should I add a fifo board before dam1021?
Or should I add a fifo board before dam1021?
