HiFiBerry DAC+ Pro

The HiFiBerry DAC+ Pro is the high-end version of our well-known HiFiBerry DAC+.
It is a high-quality digital-to-analog converter for the Raspberry Pi (newer
models with 40 pin GPIO connector) that is enhanced with features that not only
further improve sound quality, but gives makers the chance to modify the board
to their needs.

     Dedicated 192kHz/24bit high-quality Burr-Brown DAC for best sound quality
     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 B+. Mounted in less than a minute.
     Compatible with Raspberry Pi model A+/B+/2/3
     Directly powered from the Raspberry Pi, no additional power supply
     Ultra-low-noise voltage regulator for optimal audio performance
     Integrated EEPROM for automatic configuration (not DAC+ Light)
     The board is conform to the Raspberry Pi hardware-attached-on-top (HAT)
specification.
     Comes with all components required to mount it. We include 4 M2.5x12mm
spacers to fix the board onto the Raspberry Pi.
     DAC+ Pro advanced features:
         Gold-plated connectors: Gold-plated RCA connectors ensure optimal
connection to your RCA cables.
         Dual-domain clock circuit: The DAC+ Pro uses its own on-board
ultra-low-jitter clock generator. To have the lowest jitter values, there are 2
different clocks on board: one for 44.1/88.2/176.4 kHz sample rates and another
for 48/96/192kHz.
         Hackable: The board can be modified to allow external power supply for
the analog part of the board. Also you can connect external I2S DACs. These
features need soldering on the board. This will void warranty, but real hardware
hackers have no problems with this.