PiFi Digi+ is a high-quality S/PDIF board for the Raspberry Pi Sound

Features:

1. Uses the high-end digital chip WM8804G with I2S interface; supports 16-24 bit audio data formats; excellent distortion and dynamic range, supports sampling rates up to 192 kHz. Advanced jitter reduction technology keeps intrinsic period jitter within 50 ps RMS for high-fidelity reproduction.

2. Two output interfaces: optical and coaxial, for user-friendly connection to external amplifiers.

3. Supports hardware volume control via I2C interface.

4. Powered directly by the Raspberry Pi, no external power supply needed. Features a π-type filter power supply design to effectively reduce power supply interference.

5. The I2S interface uses direct digital output, replicating a non-USB DAC mode without using other Raspberry Pi GPIO pins.

6. Includes a power indicator LED to easily monitor the expansion board status.

7. PCB features gold plating and curved traces (a technique used in high-end HIFI DACs) to ensure signal impedance continuity, reducing signal reflections and refractions.

8. Superior sound quality thanks to premium materials: imported HIFI-class optical connector and a Pluse imported audio isolation transformer for the coaxial interface. These components protect your digital audio device and the board. (We do not cut corners on cost to ensure reliability and sound quality, unlike some foreign products).

9. Integrated infrared receiver function for easier playback control, even without a network.