HiFiBerry DAC2 Pro

The HiFiBerry DAC2 Pro is a high-resolution digital-to-analogue and analogue-to-digital converter for the Raspberry Pi (newer models with a 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.

Note: This board will not fit inside the HighPi case range due to the headphone connector.

DAC2 Pro or DAC2 HD? If you’re just looking for the best audio quality – the answer is easy: the DAC2 HD. It offers lower distortions, higher signal-to-noise-range and higher dynamic range than the DAC2 Pro.

If you’re on a budget, but still want a high-quality DAC, this DAC2 Pro might be your choice - the DAC2 Pro is a new and improved version of the popular DAC+ Pro, adding a headphone connection as well as the ability to attach a DSP add-on board (coming soon!)

DSP Add-on for the DAC2HD now available!

Features

• 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
• Supports HiFiBerry DSP add-on module
• Connects directly to the Raspberry Pi, no additional cables required
  
• No soldering - comes as a pre-fabricated kit
• Conforms to hardware-attached-on-top (HAT) specification with EEPROM for automatic configuration
• 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
• 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 the analogue audio amplifier

Specifications

Maximum Output Voltage	2.1Vrms
DAC Signal-to-Noise Ratio	112dB (typical)
DAC THD+N	-93dB (typical)
Frequency Response	10Hz–70kHz (-3dB)
Power Consumption	<0.3W
Sample Rates	44.1–192kHz

Resources

• Datasheet available here, showing pins/connectors and configuration
• Updating the Linux kernel
• 3D model (step)