Depending on the board the power supply complexity differs.
Hifiberry digi pro linear power supply.
Hi i am a new user here.
I m planning a complete separation of power supplies between raspberry pi and digi or dac.
There are several opinions on the difference power supplies make.
Also the digi pro already uses an onboard linear power supply.
You need to de solder the resistor r3 and connect your external 3 3v power supply to the pin header p5.
Does hifiberry sell a regulated linear power supply for the raspberry pi and digi.
Therefore he created a hifiberry setup with a huge linear power supply.
I m new and just began to build a raspi 3 with the digi pro.
Hans beekhuyzen tested various products and gives his personal recommendation.
However a small modification on the board is needed.
I believe the hifiberry digi draws only a few ma 50ma.
Jens from germany doesn t like switching mode power supplies for audio.
Note that the power supply needs to provide at least 5v 1a for a stable operation of the raspberry pi.
Power supply review by hans beehuyzen.
The analog part of the dac pro can be powered independently from the power supply of the raspberry pi and the digital part of the circuit.
If you use separate power supplies gnd has to be connected for both.
Bug the digi is full digital and don t delivers an analog signal so the power source shouldn t really matter.
I ve purchased both hifiberry components and they work without technical problems but i believe there s more sound potential through optimizing power conditions.
I ve read a lot about improvment in sound quality with a better power source like linear power etc.
He uses a large heat sink and a small ventilator to get rid of the heat.
An 1 2a power supply will be enough for both raspberry pi and hifiberry.
Here comes another nice hifiberry dac installation.
As per my knowledge all potentials are in respect to a given ground potential.
For sharing ground between the dac pro and rpi 3 should i use the same linear power supply unit to power the rpi and dac pro via 1 using a usb hub or 2 need a linear power supply with dual usb ports.
Depending on the input voltage this means heat.
However a small modification on the board is needed.
Very poor external power supplies might not be able to provide a stable power supply under all conditions.
Additionally he explains how to connect a power supply directly to the hifiberry dac pro.
As the performance of the dac2hd is better than the performance of our dac pro it requires a more complex power supply.
