Troubleshooting • Raspberry PI 5 and Audio Amplifier Shield Power Supply

Hi,

I am using a Raspberry PI 4 with a Hifiberry AMP2 today and it works really well.

I have now tried to use the Raspberry PI 5 together with a IQAudio Digiamp+ but have ended up in the common RPI5 power supply issue. I don't think this issue is specific for the Digiamp+, in my point of view it's a general issue with all currently existing Audio shields that supplies the RPI with power.

In the documentation for the IQAudio Digiamp+ it clearly says that you should not power the RPI through the USB port when using the shield as the RPI is powered by the Digiamp+ board through the GPIO pins.

It also says that it supplies a maximum of 2.5A.

So Question 1: Does this make the Digiamp+ board "incompatible" with the RPI5 as it cannot provide enough power?

My workaround to this issue is to use the official RPI 5 PSU and power the RPI through the USB port and the DigiAmp+ with 12V at the same time. This seems to work but the documentation cleary says not to do it.

Question 2: What alternatives do I have to power the RPI5 if I use any kind of Amplifier Shield ?
I want to avoid cutting of the GPIO pins just to prevent power being supplied through them when USB-C PSU is used.

Thanks in advance

Statistics: Posted by RubiCube — Wed Mar 05, 2025 6:20 am

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