JustBoom Digi HAT

The JustBoom Digi HAT upgrades the Raspberry Pi with a high-quality digital audio output and produces a true, bit perfect digital output.

usually dispatched within 24 hours (>5 In stock)

In stock
Special Price €27.99 Regular Price €39.99
Incl. 16% VAT, excl. Shipping Cost

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Hardware on display tested and optimally supported by Max2Play

We offer the suitable hardware for DIY-solutions and to expand existing systems


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The Just Boom Digi HAT has a 192kHz/24 bit digital audio chip with bit-perfect digital output. It uses the I2S port for its audio output to relieve the CPU of the Raspberry Pi and includes an Output transformer for for galvanic isolation between the Pi and DAC on the coaxial output. Thus, the Digi offers an uncompromisingly high-end audio experience. The sound card is run from the Raspberry Pi, consequently, no external power supply is necessary for the Digi. The Raspberry Pi-GPIO Pins are still accessible after mounting the Digi, making the addition of other hardware components more convenient. Other sensors, buttons, LEDs or rotary encoders can be added freely.


At a glance:

  • No soldering required
  • Easy to install and to use with Max2Play justboom plugin
  • Powered by the Raspberry Pi GPIO header
  • Digital audio output over either optical (TOSLINK) or coaxial (RCA electrical) connectors
  • Low jitter, bit perfect digital output
  • Output transformer for galvanic isolation
  • Software volume control from your Raspberry Pi
  • All Raspberry Pi GPIO pins still accessible via 40pin unpopulated extension header
  • Compatible with Raspberry Pi A+, B+, 2B and 3B
  • Compatible with JustBoom Digi HAT Case
  • Mounting hardware included
  • Optional IR receiver included in package

Technical Details:

  • WM8804GEDS S/PDIF Transceiver with 24bit/192khz and has an integrated low jitter PLL (50ps RMS)
  • DA101JC high bandwidth digital output transformer for galvanic isolation on electrical (coaxial/RCA) output
  • Integrated EEPROM for automatic Raspberry Pi devicetree driver configuration
  • Bit perfect digital audio transmission
  • Fully HAT compliant
  • Size (LWH): 65mm * 66mm * 20mm
  • Weight: 0.02kg

Delivery Scope:

  • JustBoom Amp HAT
  • 4 Spacers and 8 Screws
  • Vishay TSOP4838 IR-Receiver

By purchasing this product, you receive an additional copy of the Max2Play Premium Testlicense (3-month period).
You can find more information about the features of the premium license here.


Plug & Play with Max2Play

Max2Play offers a browser-based administration interface for Raspberry Pi on a Linux basis. With Max2Play, applications (Max2Play extensions) can be installed and administrated on a minicomputer without any Linux knowledge. The controls can be accessed via smartphone, tablet or computer, without connecting a mouse or keyboard to the minicomputer. There is a special JustBoom Plugin available.


More Information
delivery time 2-3 Tage
Chipset WM8804GEDS
KHz/ Bitrate 192kHz / 24bit
Signal-to-noise ratio -
Output RCA digital, TOSLink
Output power (RMS) -
Clock generator Own clockgenerator
Additional connections I2S header 40 Pins (soldering required)
dedicated Connection for infrared receiver Vishay TSOP4838 IR receiver included (soldering required)
dedicated connection for rotary encoder -
Hardware features EEPROM , galvanic isolation, DA102JC Switch Mode Transformer
ALSA controls for soundcard (driver) -
Max2Play software features Justboom Plugin, Webcontrol for ALSA-driver, installer for infrared receiver, installer for rotary encoder
Power supply Micro USB of Raspberry Pi
PDF Data Manufacturer -
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