Raspberry Pi 4B/3B+/3B DAC+ AMP Sound Card X450 Expansion Board

Overview

This is a X450 DAC+ AMP Sound Card designed for Raspberry Pi 4 Model B/3B+/3B/2B/B+.

User Manual: https://wiki.geekworm.com/X450

Key Features

• Compatible with Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+
• Operating System Moode Audio Player, OSMC, Openelec, Raspbian Jessie, Volumio, Pi Core Player
• Full-HD audio – up to 24-bit/192kHz playback
• Audiophile ESS Technology Sabre premier stereo DAC ES9023
• ES9023 delivers jitter-free studio quality audio with 112dB DNR
• Built in High quality Class-D stereo audio amplifiers (TI TPA3116D2 x2)
• Up to 2×100W Into a 4-Ω BTL Load at 21Vdc
• Capable of driving 4 Ohm speakers (also works with higher impedance speakers)
• Uses the Texas Instruments ultra-low-noise voltage regulator (output noise< 10μVRMS)
• 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's leading supplier of infrared receivers)
• Onboard 3.5mm stereo headphone jack allowing audio input form other audio devices
• Onboard pluggable speaker & power screw terminals
• Onboard PH2.0 connector allowing to connect a lighted power switch
• Onboard XH2.54 connector providing 5V output to power other devices
• 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
• Reserved Raspberry Pi GPIO pin header (2x13Pins)
• Pop-noise can be improved by enabling GPIO control
• AMP can be enabled / disabled with jumper link
• Heat-sink attached to amplifiers for perfect heat dissipation

Specification

• Power supply: DC5525 Jack 6-26Vdc，≥3A recommended， 
• GPIO used : LRCK - IO19, BCK - IO18, DATA - IO21, IR - IO26, AMP mute - IO22
• Analog audio input level via onboard headphone jack : 2V RMS
• Amplifier max output power: 2×100W at 4Ω BTL Load at 21Vdc
• Resolution/Sampling Rate: upto 24bit / 192KHz (Raspberry Pi I2S)
• PCB size 87 x 56mm

WARNING: Do not apply power to your Raspberry Pi via the PI's Micro USB socket.

Packing List

• 1 x X450 Expansion Board
• 4 x Spacer F/F M2.5x20mm
• 8 x Screw M2.5x6mm