Raspberry Pi 3 B+ /3 A+ Full-HD DAC with I2S Class-D TI PCM5122 Amplifier, X400 V3.0 Auidio Expansion Board Sound Card w/Class D | Music Player for Raspberry Pi 3 Model B+, 3 Model A+, 3B, 2B, B+ Full-HD audio Burr Brown 32-bit/384kHz DAC (TI PCM5122); Built in High quality Class-D stereo audio amplifier (TI TPA3118D2) & audio headphone amplifier (TI TPA6133A); Onboard RCA connectors, 3.5mm stereo headphone jack, speaker & power screw terminals, and gold-plated high-current DC power jack; 6V~26Vdc converted to 5.1V, 3A to power the Raspberry Pi. Support Moode Audio Player, OSMC, Openelec, Raspbian Jessie, Volumio, Pi Core Player ect... and compatible with Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+ / 3 Model A+(Newest) 1 x X400 v3.0 Expansion Board 8 x Screw M2.5 *6mm 4 x Spacer M2.5 *20mm the raspberry pi is not included. Power supply specification: Input Voltage: 100-240V AC, Output Voltage: 19V DC, 2A, DC Jack:5.5x2.5mm, Frequency: 50/ 60Hz. Moode Audio Player OSMC Openelec Raspbian Jessie Volumio Pi Core Player Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+ / 3 Model A+ Full-HD audio  up to 24-bit/192kHz playback Audiophile TI Burr Brown 32-bit/384kHz DAC (TI PCM5122) Class leading audio; 112db SNR, and THD of 0.0019% Uses the digital I2S audio signals to reduce CPU load over USB audio solutions Built in High quality Class-D stereo audio amplifier (TI TPA3118D2) Built in high quality audio headphone amplifier (TI TPA6133A) Up to 230W Into a 8- BTL Load at 24Vdc Capable of driving 4 Ohm speakers (also works with higher impedance speakers) Uses the Texas Instruments ultra-low-noise voltage regulator (output noise&lt; 10VRMS) Uses the Texas Instruments high efficiency step-Down DC converter (up to 95%) 6V~26Vdc converted to 5.1V, 3A to power the Raspberry Pi Uses the genuine ALPS RK163 series potentiometer for smooth volume adjustment Built in high quality IR sensor (Vishay -the world&#039;s leading supplier of infrared receivers) Onboard RCA connectors Onboard 3.5mm stereo headphone jack Onboard speaker &amp; power screw terminals Onboard PH2.0 connector allowing to connect a lighted power switch Onboard gold-plated high-current DC power jack (5.5x2.5mm) Uses the digital I2S audio signals to reduce CPU load over USB audio solutions Connects directly to the Raspberry Pi - No wiring required Powers the Raspberry Pi - no additional power supply Duplicated Raspberry Pi GPIO pin header (2x13Pins) Pop-noise can be improved by enabling GPIO control AMP can be enabled / disabled with jumper link Power supply: 6-26V DC GPIO used : LRCK - IO19, BCK - IO18, DATA - IO21, IR - IO26, AMP mute - IO22 Analog audio output level: 2V RMS Headphone max output power: 142mW at 16 Amplifier max output power: 230W at 8 BTL Load at 24Vdc Resolution/Sampling Rate: upto 24bit / 192KHz (Raspberry Pi I2S) PCB size 87 x 56mm Dimension of input plug (Unit: mm) is as the right picture.