I’ve been a Volumio user since 2020 but now i’ve discovered this is my first time creating a topic here!
So… straight to the point: I’m building a DIY streamer using Volumio and an RPi 4.
Until today, I’ve powered my RPi 4 via USB-C using an Allo Shanti Linear Power Supply.
Now, I’m considering upgrading the Allo’s power cables to Hi-Fi silver ones. My question is: should I stick with the USB-C connector, or would it be better to power the RPi through the GPIO pins?
In response to your question, powering the RPi 4 through the USB-C connector vs. using the GPIO pins both have their pros and cons:
USB-C Power Supply:
Pros: The USB-C connector is designed to provide stable 5V power to the RPi with built-in overcurrent protection. It’s easy to implement and widely supported.
Cons: If you upgrade to a high-quality silver power cable, you may notice some improvement in sound quality or power delivery, but the USB-C port is still subject to potential power noise or voltage drops due to the connectors and cables used.
GPIO Pins:
Pros: Directly powering the RPi through the GPIO pins (5V and GND) can reduce the potential noise or losses associated with the USB-C connector and power cable. This can lead to cleaner power delivery, which may result in better performance for audio applications. Many audiophiles use this method for improved sound quality.
Cons: Powering via GPIO bypasses the built-in power protection circuits that the USB-C connector provides. This means you would need to be more careful with power regulation and ensure you’re providing clean and stable 5V power, as any voltage spikes or noise could harm the RPi.
Important Note: It is crucial that your power supply (regardless of the connection method) maintains the Pi’s specified voltage range (4.75V - 5.25V) while delivering the required current. Power supplies that do not stay within this range or fail to supply adequate current can lead to instability, performance issues, or even damage to the Raspberry Pi.
Recommendation:
If you’re already using a high-quality linear power supply (like the Allo Shanti), the potential gains from switching to GPIO might be marginal, as your current setup should already provide clean power. However, if you’re optimizing for the best possible audio performance and are comfortable with adding the necessary protections (such as a good quality fuse and proper voltage regulation), then powering through GPIO could provide a slight edge in terms of minimizing noise.
Ultimately, it’s a subjective decision—both methods can work well, but the GPIO route is more “audiophile” and can offer a cleaner power delivery if implemented correctly.
Thank you very much for your time and detailed response. Honestly, I was already leaning towards powering through the GPIO pins, and your answer has completely convinced me. I hope the Allo Shanti performs well!