> For the complete documentation index, see [llms.txt](https://wiki.wisdpi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.wisdpi.com/raspberry-pi/rpi-hat-wisdpi-hifi-dac/external-power-input.md).

# External power input

As a hardware engineer, I understand that the Raspberry Pi's power supply often has significant ripple, leading to a poor experience when using a HiFi DAC. To address this issue, our DAC allows users to connect an additional low-ripple power supply to improve the user experience.

<figure><img src="/files/HUK8e3ysx7HdMd9W7tB6" alt="" width="375"><figcaption></figcaption></figure>

Our DAC features a unique design that allows for a secondary power input to be connected via a separate power connector. This additional power input is specifically designed to provide low-ripple power to the DAC, resulting in a cleaner audio output. By utilizing this feature, users can significantly improve the audio quality of their Raspberry Pi projects.

With our DAC's additional low-ripple power supply input, users can enjoy a higher quality audio experience without the need for expensive external components. Simply connect a low-ripple power supply to the secondary power input and enjoy a cleaner, more refined audio output.

## External Power requirements:&#x20;

* Voltage: +5V ±15%
* Current：≥ 50mA