Datasheet DAC2 HD


Datasheet DAC2 HD


The HiFiBerry DAC2 HD is a high-end digital-to-analog converter for the Raspberry Pi (newer models with 40 pin GPIO connector).


  • Stereo output
  • Dedicated 192kHz/24bit high-quality Burr-Brown DAC
  • Custom current-to-voltage output stage with high-end filtering
  • Four ultra-low-noise linear voltage regulators for optimal audio performance
  • Low-jitter clock for optimised clock performance (independent from Raspberry Pi clock sources)
  • Hardware volume control for DAC. You can control the output volume using “alsamixer” or any application that supports ALSA mixer controls.
  • Supports HiFiBerry DSP add-on module
  • 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 required
  • 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
  • Requires at least Linux kernel 4.19.97


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.


1DSP extension header
2Analogue output, access to 5V
35V from Pi


Maximum output voltage2.1Vrms
DAC signal-to-noise ratio123dbtypical
DAC THD+N-108dbtypical, 44.1kHz, -10dBFS
Frequency response10Hz-40kHz-3dB
Power consumption<1W
Sample rates44.1-192kHz
Bits/sample16, 32


To support the DAC+ HD, a Raspberry Pi Linux kernel of at least version 4.19.97 is required. Have a look at the documentation how to update the Linux kernel if you’re still using an older kernel version.

Overlay for config.txt:

ALSA Mixer controls

FunctionControl name
Volume controlDAC


Additional documentation

Last updated: February 17, 2021