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HiFiBerry DAC + Digi on the same Raspberry Pi

Jörg Mürner

March 29, 2014 21:26

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Hello
On your website you have a clue where you describe that it is possible to simultaneously operate on a Raspberry Pi, the Digi and the DAC board. However, it is still in the testing phase.

Is it possible and can it for example be used with PiCorePlayer?
What adjustments are needed?


Thank you for your feedback
rost21A

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11 comments

• 0
  
  HiFiBerry team March 30, 2014 08:54

  Connect both devices in parallel. As the driver use HiFiBerry Digi, NOT DAC. Then you will have simultaneous output on both Digi and DAC.
  
  Best regards
  Daniel
• 0
  
  Heinz-Martin Weigand April 01, 2014 10:09

  Hi Daniel,
  
  could you clarify this a bit?
  
  What I understand is, that you attach the digi first and then the dac on top. Then select the digi driver.
  
  After that, I would have a signal on both, the dac and the digi, without switching the driver or change something on the software side?
  
  Thanks,
  Heinz
• 0
  
  HiFiBerry team April 01, 2014 12:35

  Dear Heinz,
  
  you understood it correct. You will have the output on both cards.
  
  Best regards
  Daniel
• 0
  
  Jörg Mürner April 01, 2014 21:37

  Hello
  Could it be useful to realize the connection via a ribbon cable and corresponding pin header connector and then to place the modules in addition to the Rpi?
  Could optionally be constructed as a separate power supply.
  What do you think about the cable length?
  
  Thank you for your feedback
  rost21A
• 0
  
  HiFiBerry team April 04, 2014 10:34

  In general it works, but you should keep the cable length short. At 44kHz, this is not a big problem, but if you run 192kHz, the clock frequency is already >10Mhz.
• 0
  
  Rob Gardner May 09, 2014 06:53

  Hi - if you used both DAC and Digi in parallel would you only get half the output on each? Also would 2 DACs in parallel work as well?
• 0
  
  HiFiBerry team May 13, 2014 07:04

  You will get the full output. However we can't guarantee that it works, as the power supply of the 3.3V rail of the Raspberry is very limited and might be too weak to power two devices.
  
  Best regards
  Daniel
• 0
  
  gis March 06, 2017 15:38

  Is anyone actually using those two interfaces at the same time?

  I'm using DAC+ Pro and I'd like to buy a Digi+ Pro for testing purposes...

  Edited by gis March 06, 2017 15:40
• 0
  
  HiFiBerry team March 06, 2017 18:32

  Unfortunately this isn't possible. You can only use one of them.

  Best regards,
  Daniel

• 0
  
  Jonathan Robson November 03, 2021 22:42

  Hi so my question today is within the same realm of this post. I currently have a digi 2 pro connected to a Raspberry pi4. I would like to connect a hifiberry dac on top of the digi 2 pro so I could use the RCA outputs to my Sony EQ. Is this possible. 

  Regards, 

  Jonathan

• 0
  
  HiFiBerry team November 04, 2021 05:27

  No, you can't combine two sound cards on a single Pi.