Hifiberry Digi Pro Linear Power Supply

Power supply review by hans beehuyzen.

Hifiberry digi pro linear power supply.

Also the digi pro already uses an onboard linear power supply. Additionally he explains how to connect a power supply directly to the hifiberry dac pro. I m new and just began to build a raspi 3 with the digi pro. Does the quality of the power source affect the audio quality.

Therefore he created a hifiberry setup with a huge linear power supply. You need to de solder the resistor r3 and connect your external 3 3v power supply to the pin header p5. Depending on the input voltage this means heat. He uses a large heat sink and a small ventilator to get rid of the heat.

Note that the power supply needs to provide at least 5v 1a for a stable operation of the raspberry pi. 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. An 1 2a power supply will be enough for both raspberry pi and hifiberry. Here comes another nice hifiberry dac installation.

If you use separate power supplies gnd has to be connected for both. Hi i am a new user here. Very poor external power supplies might not be able to provide a stable power supply under all conditions. Does hifiberry sell a regulated linear power supply for the raspberry pi and digi.

As the performance of the dac2hd is better than the performance of our dac pro it requires a more complex power supply. As per my knowledge all potentials are in respect to a given ground potential. The digital audio part of the digi pro can be powered independently from the power supply of the raspberry pi. There are several opinions on the difference power supplies make.

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. I believe the hifiberry digi draws only a few ma 50ma. Depending on the board the power supply complexity differs. Bug the digi is full digital and don t delivers an analog signal so the power source shouldn t really matter.

I ve read a lot about improvment in sound quality with a better power source like linear power etc. However a small modification on the board is needed. However a small modification on the board is needed. Jens from germany doesn t like switching mode power supplies for audio.

Thus i am planning to power the dac pro with linear power supply as you mentioned above and am about to order a linear power supply unit.