The HiFiBerry Digi2 Pro Rev. 2.2 is a sophisticated digital audio interface board designed specifically for Raspberry Pi enthusiasts and audiophiles. This HAT-compliant board delivers exceptional digital audio output through both optical (Toslink) and electrical connections, supporting high-resolution audio up to 192kHz/24bit. The board features a dedicated S/PDIF interface chip that ensures bit-perfect audio transmission, meaning your audio signal remains completely unaltered. Installation is remarkably straightforward - simply attach it to your Raspberry Pi's GPIO pins with the included mounting hardware (four M2.5x12mm spacers). No additional power supply is needed as it draws power directly from your Raspberry Pi. The board's enhanced design includes a second GPIO header for add-on board compatibility, making it versatile for various audio projects. Compatible with Raspberry Pi models A+, B+, 2B, and 3B, this board is perfect for creating high-end digital audio connections or linking to premium DACs. The pre-fabricated design requires no soldering, making it accessible to users of all skill levels.