HiFiBerry Amp4 Raspberry Pi Power Amplifier

The HiFiBerry Amp4 is a compact, high-quality Class-D power amplifier board designed specifically for the Raspberry Pi, transforming it into a powerful and efficient stereo audio system. Simply mount it onto the GPIO header of your Raspberry Pi, connect your speakers, and you are ready to enjoy high-fidelity sound. This integrated solution eliminates the need for multiple power supplies, as a single 12-24V power source can drive both the amplifier and the Raspberry Pi itself.

Key Features & Performance

• High-Efficiency Class-D Design: Delivers clean, powerful audio with minimal heat generation and energy consumption.
• Substantial Power Output: Provides up to 60W of power, capable of driving a wide range of speakers.
• Broad Compatibility: Works with all speakers of 4-8 Ohm impedance and supports high-resolution audio sample rates from 44.1kHz up to 192kHz at 16-32bit.
• Integrated Power Solution: The onboard voltage converter powers the Raspberry Pi, removing the requirement for a separate 5V USB power supply.
• Expandable System: Offers support for the optional HiFiBerry DSP add-on for advanced audio processing and customisation.

Installation & Usage Notes

For optimal performance with 4 Ohm speakers, a 12-20V power supply is recommended. When using 8 Ohm speakers, a higher operating voltage within the 12-24V range is advised for best results. It is important to note that while the integrated voltage converter is sufficient to power a Raspberry Pi 4, it is not designed to support additional power-hungry USB devices or hardware drawing significant current from the GPIO's 5V rail, as this may cause system instability.

If your chosen audio software does not list the Amp4 as an output option, you can utilise the HiFiBerry DAC+ driver for full compatibility. With its plug-and-play HAT design and robust feature set, the HiFiBerry Amp4 is an ideal choice 0