Key Features
Class-leading audio signal-to-noise ratio of 112dB and THD of 0.0019%
Built-in high-quality Class-D stereo audio amplifier (TI TPA3118D2)
Up to 2 x 30W into an 8Ω BTL load at 24Vdc
Capable of driving 4 ohm speakers (will also work with higher impedance speakers)
Built-in high-quality audio headphone amplifier (TI TPA6133A)
Uses Texas Instruments ultra-low noise voltage regulator (output noise <10μVRMS)
Uses Texas Instruments high-efficiency step-down DC converter (up to 95%)
Converts 6V to 26Vdc to 5.1V, 3A to supply the Raspberry Pi
Uses genuine ALPS RK163 series potentiometer for smooth volume adjustment
Built-in high-quality IR sensor (Vishay (The world's leading supplier of infrared receivers)
Onboard RCA connector
3.5mm stereo headphone jack
Plugable speaker and power screw terminals
Onboard PH2.0 connector with illuminated power switch
Onboard gold-plated high-current DC power jack (5.5 x 2.5mm)
Uses digital I2S audio signals to reduce CPU load over USB audio solutions
Connects directly to Raspberry Pi - no wiring required
Powers Raspberry Pi - no additional power supply required
2x13 reserved GPIO pin headers for Raspberry Pi
Pop noise can be improved by enabling GPIO control
AMP can be enabled/disabled with a jumper
Specifications
Power supply: 6-26Vdc, ≥3A recommended
GPIOs used: LRCK - IO19, BCK - IO18, Data - IO21, IR - IO26, AMP Mute - IO22
Analog audio output level: 2V RMS
Maximum Headphone Output Power: 142mW at 16Ω
Maximum Amplifier Output Power: 2 x 30W at 8Ω BTL Load @ 24VDC
Resolution/Sampling Rate: Up to 24bit/192kHz (Raspberry Pi I2S)
Board Size: 87 x 56mm
Packing List
1 x 400v 3.0 Expansion Board
8 x M2.5*6mm Screws
4 x M2.5*20mm Spacers
Note:
Raspberry Pi not included.
Full HD Audio Bar-Brown 32-bit/384kHz DAC (TI PCM5122).
Integrated high-quality Class-D stereo audio amplifier (TI TPA3118D2) and audio headphone amplifier (TI TPA6133A).
Onboard RCA connectors, 3.5mm stereo headphone jack, speaker and power screw terminals, and gold-plated high-current DC power jack. 6V to 26Vdc converted to 5.1V, 3A to power a Raspberry Pi - no additional power supply required
Supports Moode Audio Player, OSMC, Openelec, Raspbian Jessie, Volumio, Pi Core Player, etc. Compatible with Raspberry Pi: 1 Model B+ / 2 Model B / 3 Model B / 3 Model B+ / 3 Model A+ (latest)