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Pi Supply

JustBoom Amp HAT


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The JustBoom Amp HAT is a high quality audio amplifier designed for the Raspberry Pi. A digital-to-analog convertor is also included, no external sound card or DAC required. Simply stack the add-on board onto your Raspberry Pi A+/B+/2B/3B and you are ready to go!

The Amp HAT incorporates a Class-D amplifier chip with built-in 192kHz/32bit DAC for a peak output of 2 x 55 Watt! There are two speaker cable connector blocks that accept anything up to 14 AWG cable and provide crystal clear audio to 4Ω and 8Ω speakers. It uses the I2S interface to reduce CPU load on the Pi compared to USB solutions. It is also designed to back-power the Pi via the GPIO header so you only need a single power supply. All of the unused GPIO pins are accessible for further customisation of your project.

Power supply recommendation: 15V / 65W


• Full high quality audio – 192kHz / 32bit
• 2 x 55 Watt peak output at 8 ohms (2 x 30 Watt RMS)
• Includes both a DAC and power amplifier – just connect to your passive speakers
• Back-powers the Raspberry Pi over the GPIO
• Plug and play compatibility for ease of use
• Hardware and software volume control from your Raspberry Pi
• Onboard, hardware jumpers for configuring mute and gain settings (jumpers could optionally be changed with switches)
• Mute/enable with GPIO22 (this can be overridden by using jumper J4)
• No soldering required
• Compatible with Raspberry Pi A+, B+, 2B and 3B (also compatible with the Raspberry Pi Zero; though we recommend the JustBoom Amp Zero for this)
• Mounting hardware included
• Optional IR receiver for the JustBoom Raspberry Pi Amp is included in package
• Unused GPIO pins still accessible via unpopulated extension header
• Fully HAT compliant
• Full driver support in Raspbian / NOOBS
• Compatible with OSMC / RuneAudio / Volumio / Moode / PiCorePlayer / PiMusicBox / OpenELEC and others