Raspberry Pi I2S Input (LRCK - GPIO19, BCK - GPIO18, DATA - GPIO21, GND) Output Ports: 1 x 3.5mm phone jack, 2 x RCA connectors Analog audio output level: 2.0VRMS Resolution/Sampling Rate: upto 24bit / 192KHz (Raspberry Pi I2S) IR receiver: GPIO17, 38KHz Operating System: Moode Audio Player, OSMC, Openelec, Raspbian Jessie, Volumio, Pi Core Player, RuneAudio Support: Volumio, RuneAudio, OSMC, XMBC(Kodi), MOODE etc. Full-HD audio: up to 24-bit/192kHz playback Built in audiophile TI Burr Brown DAC (TI PCM5122) Class leading audio: 112db SNR, and -93db THD Integrated hardware volume control:TI's LP5907 Ultralow-Noise voltage regulator for optimal audio performance Built in IR receiver: Vishay TSOP34838) Available with RCA and 3.5mm phone jack output connectors Powered by Raspberry Pi, no external power requirements Colour:black Material:Metal + Plastic Package Contents: 1 * expansion board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.