Datasheet DAC+ Pro


Datasheet DAC+ Pro

This is an archived documentation. It won't be updated anymore and it might not be accurate anymore.

The DAC+ Pro is not available anymore and has been superseded by the newer DAC2 Pro.


The HiFiBerry DAC+ Pro is a high-resolution digital-to-analog for the Raspberry Pi (newer models with 40 pin GPIO connector). This is a special sound card for the Raspberry Pi, optimised for one specific use case: the best audio playback


  • Stereo output
  • Dedicated 192kHz/24bit high-quality Burr-Brown DAC (5)
  • Hardware volume control. You can control the output volume using “alsamixer” or any application that supports ALSA mixer controls.
  • Connects directly to the Raspberry Pi, no additional cables needed
  • No soldering, comes as a pre-fabricated kit. You just plug it onto the Raspberry Pi, it is conform to the Raspberry Pi hardware-attached-on-top (HAT) specification.
  • Compatible with all Raspberry Pi models with a 40-pin GPIO connector
  • Directly powered from the Raspberry Pi, no additional power supply
  • Ultra-low-noise linear voltage regulator for optimal audio performance
  • Low-jitter dual-domain clock for optimised clock decoupling from the Raspberry Pi (6)
  • HAT compliant, EEPROM for automatic configuration
  • Gold plated RCA output connectors
  • Comes with all components required to mount it. We include 4 M2.5x12mm spacers to fix the board onto the Raspberry Pi


Note that the actual board might look a bit different. Layout and components might change without further notice. We do not guarantee a specific PCB layout or specific components.


15V (connected in parallel to Raspberry Pi 5V)
2Analoge output
3Analog output (in parallel to RCA jacks)
4I2S data

I2S connector

(pin 1 is the bottom pin on the picture above)



Maximum output voltage2.1Vrms
DAC signal-to-noise ratio112dbtypical
DAC THD+N-93dbtypical
Frequency response10Hz-90kHz(-3dB)
Input gain-12db to 32dB
Power consumption<0.3W
Sample rates44.1-192kHz


Overlay for config.txt:

ALSA Mixer controls

Analog output gain (0dB/-6dB)Analogue

FunctionControl name
Volume controlDigital


Additional documentation

Last updated: February 23, 2021