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Raspberry Pi Klein combo interest

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I'm certainly in the market for a new streaming system to replace my airport express (and probably a new dac).

This would be a dac/streamer in one unit? 

I'm not familiar with Pi so I'm sorry be so dull-witted, whats the point of the SD card?

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Obviously It's going to take a bit of R&D to sort the reclocking thing but I have all the gear & keen to have a go.

 

:thumb:     It is right for a 'scope-wielding type of person to be doing this....  as these signals are too difficult to pin down for plug-and-pray.

 

 

 

whats the point of the SD card?

 

To get software onto the Pi.     Many type of operating system software can be run on it, toturn it into various flavours of streamer.   eg.   Squeezebox, MPD, NAA, Audio-over-IP, etc. etc.

 

 

... but I assume Clayton would plan to provide the Pi included with some sort of software, sopeople had an "out of the box" streamer experience.

Edited by davewantsmoore

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The SD cards are finicky little things, so rooting around inside the case may not be a good idea....
BR198573_sandisk_sandisk_ultra_micro_8gb
SanDisk 8GB Ultra MicroSDHC Memory Card ($6.97)
http://www.officeworks.com.au/shop/officeworks/p/sandisk-8gb-ultra-microsdhc-memory-card-br198573

Even rooting around the back of the unit is difficult if swapping cards. If not swapping cards then all's fine, it becomes insert and forget.

An extender I found...
http://www.redtron.com/Extender%20Board/TFEX.html

tfex_b3.jpg

Or this...

$_35.JPG?set_id=880000500F

To maybe give you some ideas, heres examples of case designs for the Rapsberry pi...

$_12.JPG

And...

H6408.jpg

And...
audiophonics-raspdac-lecteur-reseau-rasp
That one above has a revolving picture of the completed unit, 360'...

http://www.audiophonics.fr/en/diy-dac/audiophonics-raspdac-kit-diy-network-player-for-raspberry-pi-20-dac-p-10511.html

More of the same unit...

audiophonics-raspdac-lecteur-reseau-rasp

audiophonics-raspdac-lecteur-reseau-rasp

Stop me if I'm over-stepping the mark, I am very excited and am throwing everything I can at you (did I say without proof reading? something I never do!)...

With their linear power supply connected...

btr_3.jpg
 

If I've gone too far, just tell me, and I'll delete these pics.... I will be back....

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What are the advantages of having the Pi inside the DAC compared having the Pi on the outside?

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Direct "I2S signal" connection directly between the Pi and DAC "for pure digital audio transfer and to improve the sound quality", and "reduce CPU load over USB audio solutions". Just a guess. Could be wrong, don't know enough about the technology.

 

http://www.collybia.com/mamboberry-hifi-dac/

 

Edit: Less power cords. Saves buying a Pi, and a DAC and a linear power supply separately. And, the most important reason... I like the idea.

Edited by rastus

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What the guys at Collybia (a Greek mob) that created the Mamboberry HiFi DAC+ (with built in linear power supply on the DAC board itself) did was contact the RuneAudio developers to ask to include  a copy of RuneAudio software with thier "Mambo Media HiFi Player(kit)" (I would suppose also to try get software support for their DAC built into RuneAudio)....

"Our DAC will be called, Mamboberry... Can you plz send me a pm with your contact info?(address, etc)......"
http://www.runeaudio.com/forum/post5414.html?hilit=Mamboberry#p5414

Re RuneAudio forum: I am a member over there, and rather noisy about it too (could point you in the right direction if you chose this path)... don't know if that could help you.

This is all gobble-de-goop to me, but may mean something to you (ignore it if it's useless)...

The Mambo Media HiFi Player(kit)
"Special design ! – Low noise power supply & HD DXD 352.8Khz D.A.C. in one board !
The choice we did with SABRE 9023p chip DAC was the best for our goal. With the technology, “Time Domain Jitter Eliminator“ provided by SABRE and the high quality oscillators(low-jitter oscillator(Xpreso Fox) we use, we achieved the lowest noise level!
Just connect a 6 Volt 2A AC transformer(or 9V 2A DC) and the on board ultra low noise regulator will supply the RPi  board with clean linear low noise power....by Vasilis Tounas – sound technician"
http://www.collybia.com/mamboberry-hifi-dac/
Mamboberry.png

Pictures of their case design can be found on the link below (I can't link them here)...
http://www.collybia.com/product/mambo-media-player/#tab-description

 

Now Clayton, I hope I have not overstepped, or whatever... I really am interested in this project. I figured I'd throw as much as I could... to show you there is interest (from me).

 

PS: No 'proof readers' were hurt (or used) in this production. Not my usual, but boy did I get a major soft-on reading your concept post. Anyway, back to you. I'm exhausted.

Edited by rastus

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Sounds like a great idea.

But what are the disadvantages of having the Pi in the DAC?

I use my cd player as a transport via spdif (rca) to my dac, so loss of spdif is one disadvantage for me.

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Somebody mentioned a modular design previously in this or another thread. Could you offer a modular design dac, Pi, pre?

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Looks like sd card reader slot will have to be at the top or side

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