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Digital input for Hifiberry DAC

jean-christophe didier

August 28, 2014 09:23

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Hello Daniel,

have you considered adding a digital input to your hifiberry DAC (spdif and/or toslink) in order to use hifiberry/raspberry as a general purpose DAC for streamed and physical media ?
Would it be a big change in your design ?

B.R

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12 comments

• 0
  
  HiFiBerry team August 28, 2014 11:29

  Dear Jean Christophe,
  
  we thoug about it. Adding it to the existing board would be a major change and would also increase the price a lot. Therefore we do not plan to have something like this in the near future.
  
  Best regards
  Daniel
• 0
  
  Ivan Iudice January 20, 2016 09:44

  Hello!
  I would like to add a toslink digital audio input to my raspi equipped with your DAC+ Pro.
  Do I need to add a modded Digi+? Mod works fine?
  Thank you for answers.

  Ivan

• 0
  
  HiFiBerry team January 20, 2016 09:51

  Hi,

  unfortunately you can't connect two boards to the same Raspberry Pi.

  Best regards
  Daniel

• 0
  
  Ivan Iudice January 20, 2016 10:40

  Do you know another way to add toslink digital input?

  Thank you.

   

  Ivan Iudice

• 0
  
  HiFiBerry team January 20, 2016 17:38

  What exactly do you plan to do?

  Best regards
  Daniel

• 0
  
  Ivan Iudice January 20, 2016 19:55

  My aim is to connect my TV digital out to raspberry and pass-through audio to the analog output of DAC+ pro.

  In this way I could use raspberry with runeaudio or volumio and at the same time switch to TV audio output when I need.

   

  Ivan 

• 0
  
  HiFiBerry team January 20, 2016 20:51

  There is no easy way to do this with the Raspberry Pi. Even if you connect an external USB sound card, you still have to copy the audio data between both. Why don't you connect the output of the TV directly to your amplifier?

  Best regards
  Daniel

• 0
  
  Ivan Iudice January 20, 2016 21:05

  Because I'm using a wonderful vintage amplifier that has not optical input.

  This feature would make my rasp-audio-box perfect! =)

   

  Ivan

• 0
  
  Toon Broekmans January 31, 2018 23:08

  Hello, I have exactly the same question as Ivan, any updates on this? I have choice between SPDIF and RCA as input from my TV... Any options for a solid setup?

  Thanks

  Toon

• 0
  
  HiFiBerry team February 01, 2018 15:32

  At the moment, the best option is to use the Beocreate 4 channel amplifier that has an optical input and an integrated amplifier:
  https://www.hifiberry.com/beocreate

  Note that to implement volume control from the Raspberry Pi, you will need to use a small command line tool that can modify settings on the DSP.

  Best regards,
  Daniel

• 0
  
  Toon Broekmans February 01, 2018 15:54

  Hi Daniel, thank you for the reply.

  At this moment I have a Hifiberry DAC+XLR connected to my Pi. The Pi is stream music from Raspotify trough dac+xlr to my 2 monitor speakers which have integrated amplifiers. I would like to collect sound from TV with SPDIF or RCA and push it trough the DAC converter to my monitor speakers. Next step would be to write some piece of software that selects which audio source is selected. Is this possible with any addon card or usb device (I think the Beocreate is overkill). Will latancy be a problem for watching movies?

  Thanks,

  Toon

• 0
  
  HiFiBerry team February 01, 2018 19:18

  You can try to use an SPDIF/USB interface. However, you will still need a tool that copies the data from one card to the other. While this might add a some ms latency, it's definitely not a problem for watching movies. However, that's just theory. I haven't seen somebody implementing something like this.

  Best regards,
  Daniel