BerryNOS DAC module for RPi

[eragefe]

The very first G2labs RPi DAC impementation is out.
http://g2labs.org/2014/03/01/berrynos-1 ... pberry-pi/




The DAC is the legendary TDA1543 from Philips. NOS mode I2S direct balanced and unbalanced outputs
RuneUI+BerryNOS=highend network streamer

BR G

[ACX]

We were used to see the DAC mounted over the boards, but this time it's the Rpi that lays over the DAC
Can't wait to try it, it looks very promising.

[Orion]

Great work!
My first DAC was based on TDA1543 (in NOS mode), I really love that kind of sound.

[ACX]

Just a question:

Technical details
Input up to 24bit
Output up to 96 kHz

As the Philips TDA1543 only supports 16/44.1 as input, does it mean that it accepts everything up to 24/96 but treats it anyway as 16/44.1, right?

I'm also curious about the design choices, for example could you tell us the reason because you picked the old legend TDA1543 over a more modern DAC? I know that pure datasheet specs are secondary to the overall implementation (and an older DAC can still sound great with the right design around), so I'm interested in knowing the tecnical evaluation behind that.

[eragefe]

As the Philips TDA1543 only supports 16/44.1 as input, does it mean that it accepts everything up to 24/96 but treats it anyway as 16/44.1, right?

Yes that is right

I'm also curious about the design choices, for example could you tell us the reason because you picked the old legend TDA1543 over a more modern DAC? I know that pure datasheet specs are secondary to the overall implementation (and an older DAC can still sound great with the right design around), so I'm interested in knowing the technical evaluation behind that.

The last five years I have done tons of listening tests with several DAC chips and configurations.
Those I think sounds absolutely best is those with no digital filters or oversampling.
The only modern chip I know that can be used as NOS is PCM1794

So we decided to do three different solutions based on TDA1543, TDA1387 and PCM1794
But the implementation of the old chips is little bit different than the usual way.
When you look at the TDA 1543 DAC you can see that it is biased on very unconventional way regarding pin 7.
This implementation based on TDA 1543 is the mid-price DAC.

We will release a smaller DAC for RPi, based on TDA 1387 (very unusual implementation too).
AND a bigger DAC (and more expensive) based on dual PCM1794 in NOS made as I said on the beagle bone forum.
ORION

My first DAC was based on TDA1543 (in NOS mode), I really love that kind of sound.

I hope you are going to listen to our implementation of TDA1543 it sounds really nice.

BR G

[ACX]

I hope you are going to listen to our implementation of TDA1543 it sounds really nice.

I hope the same!

[tc-fi]

The very first G2labs RPi DAC impementation is out.
http://g2labs.org/2014/03/01/berrynos-1 ... pberry-pi/

The DAC it the legendary TDA1543 from Philips. NOS mode I2S direct balanced and unbalanced outputs
RuneUI+BerryNOS=highend network streamer

BR G

Very Nice!

Are you planning to offer an enclosure?

What method are you using to convert higher sample rate / bit depth input to 16/44.1?

[eragefe]

Hi
Yes we are planning to do that.
But it is going to take some time. Please stay tuned.

What method are you using to convert higher sample rate / bit depth input to 16/44.1?

We don't need to convert anything.
TDA1543 is NOT limited to 44.1 but it accepts 96KHz by default.
The TDA1387 accepts even 192KHz
Both have a max resolution of 16bit but can play 24bit material with 16bit resolution

BR G

[Orion]

I hope you are going to listen to our implementation of TDA1543 it sounds really nice.

Surely I will be one of your first buyers.
I'm also absolutely curious to listen your TDA1387 implementation.

Just to clarify that I'm a real lover of TDA family, here is two "jewels" from my collection:

the glorious PHILIPS TDA1541A-S2

_DSC0700.JPG (147.65 KiB) Viewed 9476 times

[Bjarne]

Hi
How did you implement I2S support for this DAC in Rune Audio?

regards Bjarne