Hifiberry Digi Pro Linear Power Supply

Hans beekhuyzen tested various products and gives his personal recommendation.

Hifiberry digi pro linear power supply.

An 1 2a power supply will be enough for both raspberry pi and hifiberry. As the performance of the dac2hd is better than the performance of our dac pro it requires a more complex power supply. 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. Depending on the board the power supply complexity differs.

Does the quality of the power source affect the audio quality. I m planning a complete separation of power supplies between raspberry pi and digi or dac. However a small modification on the board is needed. Jens from germany doesn t like switching mode power supplies for audio.

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. Does hifiberry sell a regulated linear power supply for the raspberry pi and digi. The digital audio part of the digi pro can be powered independently from the power supply of the raspberry pi.

Hi i am a new user here. There are several opinions on the difference power supplies make. Power supply review by hans beehuyzen. Therefore he created a hifiberry setup with a huge linear power supply.

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. Depending on the input voltage this means heat. Note that the power supply needs to provide at least 5v 1a for a stable operation of the raspberry pi. Also the digi pro already uses an onboard linear power supply.

Bug the digi is full digital and don t delivers an analog signal so the power source shouldn t really matter. You need to de solder the resistor r3 and connect your external 3 3v power supply to the pin header p5. Here comes another nice hifiberry dac installation. I believe the hifiberry digi draws only a few ma 50ma.

However a small modification on the board is needed. I m new and just began to build a raspi 3 with the digi pro. As per my knowledge all potentials are in respect to a given ground potential. If you use separate power supplies gnd has to be connected for both.

Additionally he explains how to connect a power supply directly to the hifiberry dac pro.