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    X5500 HiFi DAC+AMP Expansion Board Hardware   Software
- Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+ / 4 Model B
- Moode Audio Player
- 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 TPA3118D2)
- Up to 2×30W Into a 8-Ω 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< 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
- Gold-plated RCA connectors
- Gold-plated high-current DC power jack (5.5x2.5mm)
- High quality digital amplifier inductors
- Onboard pluggable speaker screw terminals
- Onboard XH2.54 connector providing 5V output to power other devices
- Optimal design realizes middle -high quality sound and low distortion
- 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 40-pin header
- Pop-noise can be improved by enabling GPIO control
- AMP can be enabled / disabled with jumper link
- Compatible with X710 for intelligent power mgmt and cooling your amplifier (See notes1)
- Compatible with X850 for mSATA SSD storage expansion (See notes 2)
- Compatible with X872 for M.2 NVME SSD storage expansion (See notes2)
- Compatible with X860 for M.2 SATA SSD storage expansion (See notes2)
- Power supply: 6-26Vdc,≥3A recommended
- GPIO used : LRCK - IO19, BCK - IO18, DATA - IO21, IR - IO26, AMP mute - IO22
- RCA Analog audio output level : 2V RMS
- Amplifier max output power: 30W at 4Ω BTL Load at 24Vdc
- Resolution/Sampling Rate: upto 24bit / 192KHz (Raspberry Pi I2S)
- PCB size 85 x 57mm
- 1) Additional M2.5*20 M/F spacers & 2-pin XH2.54 cable required (not supplied)
- 2) Additional M2.5*8 M/F spacers required (not supplied)
- Don't power your Raspberry Pi via the Pi's 40-pin header and Type-C or Micro USB socket at the same time
    Box Contents
- X5500 Expansion Board x 1  
- Screw M2.5 *6mm x 8  
- Spacer F/F M2.5 *20mm x 4  
    Optional Accessories  
  Power Supply Unit  
- AC 100 - 240V input  
- 12Vdc 3A output
- Exchangeable AC cord
- 5.5*2.5 DC plug
- 1.2M cable w/ magnet ring
- CE/FCC/UL/GS compliant 
- Smart power mgmt board
- Wide 6~36V input range
- 5.1V 5000mA output
- Supports safe shutdown
- Low-noise cooling fan
  See details  
- Rpi4 M.2 NVMe SSD Shield
- Supports upto 2TB M.2 SSD
- High-speed USB3.1 5Gb/s
- Extra SSD power supply
- Ideal storage solution 
  See details  
- Rpi4 mSATA SSD Shield
- Supports SSD up to 2TB
- High-speed USB3.1 5Gb/s
- Max 4A SSD power supply
- Special-made USB jumper 
  See details  
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