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DAC with B&O Beolink Passive

Philipp

May 25, 2023 21:12

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Hello Daniel,

for my multiroom solution I will use Pi 3 model B with a DAC and B&O Beolink Passive amplifiers with B&O Beovox CX50/100 Speakers.

I would use the DAC2 HD or the DAC2 PRO.

1. The Beolink Passive needs a >3 VDC input from the audio source to switch the speaker output on.
   Could the analog +5 VDC output pins be used for it?
2. Could I use the analog output pins also for the audio signal instead of the RCA connectors?
3. Is there any solution to have an digital input from an iphone lightning connector?
   Otherwise I will have to use Airplay.
   Which means I can just use Lossless instead of Hi-Res Losless.
4. If just Airplay is used, is there still an audio quality improvement from the DAC2 PRO to the DAC2 HD ?
5. I d'like to have a fixed power supply instead of the USB-C.
   Could the "5V from Pi" connector also be used to supply the Pi over the DAC, or must always the AAMP60 been used?
6. Is there also a version of your recommended power supply without a housing for building an all in one device?

Kind regards
Philipp

 

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2 comments

• 0
  
  HiFiBerry team May 26, 2023 05:32

  > The Beolink Passive needs a >3 VDC input from the audio source to switch the speaker output on.
  > Could the analog +5 VDC output pins be used for it?
  I don't know Beolink and therefore can't say anything about it, but the 5V from the Pi might work

  > Could I use the analog output pins also for the audio signal instead of the RCA connectors?
  The signal is the same as on the RCA jacks
  
  > Is there any solution to have an digital input from an iphone lightning connector?
  No, this is a proprietary interface.
  
  > If just Airplay is used, is there still an audio quality improvement from the DAC2 PRO to the DAC2 HD ?
  This depends more on your listening skills and speakers than the transport protocol.

  > I d'like to have a fixed power supply instead of the USB-C.
  > Could the "5V from Pi" connector also be used to supply the Pi over the DAC, or must always the AAMP60 been > used?
  I don't follow. Do you want to use an Aamp60 or not? The Aamp60 will always power the whole system, but I understood that you want to use a line-level output.
  
  > Is there also a version of your recommended power supply without a housing for building an all in one device?
  No, we don't recommend this at all. Open frame power supplies are for experts that know exactly what they're doing. There is a risk that you touch 230V parts with this kind of power supply which can result in serious injuries.

• 0
  
  Philipp May 27, 2023 19:57

  > I don't know Beolink and therefore can't say anything > about it, but the 5V from the Pi might work

  The "Beolink Passive" is a amplifier from B&O for multiroom audio, you can use it with "Masterlink", a digital interface or with "Powerlink", a analog interface between the main Hifi and the "Beolink Passive" amplifier.

  Enclosed the pins of the interface from a "Powerlink" output of the central amplifier.
  It works without the Pins 4, 7 and 8 on the "Beolink Passive".

  It would be great when the "Beolink Passive" just powers up, when music is playing not when the Pi is on.

  

   

  >I don't follow. Do you want to use an Aamp60 or not? >The Aamp60 will always power the whole system, >but I understood that you want to use a line-level >output.

  The options to supply the Pi and the DAC with power are:

  1. USB-C on the Pi

  2. With an Aamp60

  3. A power management GPIO Hat?

  4. Over the pins at 3 from the DAC?