Datasheet DAC2 Pro


Datasheet DAC2 Pro


The HiFiBerry DAC2 Pro is a high-resolution digital-to-analog and analog-to-digital converter 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: affordable high-quality audio playback.


  • Stereo output
  • Integrated headphone amplifier
  • can be equipped with an additional Digital Signal Processor (DSP) for flexible audio processing
  • Dedicated 192kHz/24bit high-quality Burr-Brown DAC
  • Hardware volume control for DAC. You can control the input and output parameters 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
  • Two ultra-low-noise linear voltage regulators for optimal audio performance
  • Low-jitter dual-domain clock for optimised clock decoupling from the Raspberry Pi
  • 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
  • Audio connector to connect analog audio amplifier


1Burr-Brown DAC
2Low-jitter clock circuit
3Headphone amplifier

Connectors and Jumpers


1Line output
2Headphone output
3Analog output (compatible with Aamp60)
4DSP expansion header (compatible with DSP add-on board)

Output connector J1

This connector can be used to connect to external components, e.g. an amplifier. The output is connected in parallel to the RCA jacks. Pin 1 is on the top left.



Maximum output voltage2.1Vrms
DAC signal-to-noise ratio112dbtypical
DAC THD+N-93dbtypical
Frequency response10Hz-70kHz-3dB
Power consumption<0.3W
Sample rates44.1-192kHz


Overlay for config.txt

Kernel > 6.1.77

older Linux kernels


Additional documentation

Last updated: May 7, 2024