XDUOO Xi-2 High Performance iPhone / iPod / iPad / DAC + Portable Headphone Amplifier

SKU: FM989
Price: US$249.98
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  • Adopts the professional DAC chip WM8740*2 
  • Direct digital audio data transfer from iPod/iPhone/iPad
  • Rechargeable li-polymer battery with integrated charging system 
  • Use aluminum-shielded case prevent external interference noise


Xi-2 is a portable headphone amplifier which can be DAC for iPhone/iPod/iPad series. It accepts up to 16Bit/48KHz asynchronous USB DAC function. It built-in a OP+BUF architecture, high-slew-rate, OCL (output capacitor-less) with Split power supply. It has 1 way coaxial signal output, 1 way Line Out, one 2-Setting Gain Switch, one Bass boost ON/OFF Switch. Its power supply is built-in a 4.2V li-polymer rechargeable battery.


Power Source: DC 4.2V built-in li-polymer rechargeable battery
Output Power: 150mW (32Ω load)
Supported sampling: USB input: Maximum 48kHz/16bit
Frequency Range: Audio In:10Hz~100KHz(±0.5dB)
USB In: 20Hz~20KHz(±0.5dB)
Gain: +3/+10dB
Bass Boost On: +3dB (low GAIN), +6dB (high GAIN)
THD+N: 0.001% (1KHz)
S/N: 110dB
Suitable Earphone Impedance: 8Ω〜300Ω
Playback Time: >10H
Charging Time: <8H
Volume: 128*64*23mm
Weight: 200g


Direct digital audio data transfer from iPod/iPhone/iPad.
Adopts XMOS chip for USB signal input, PC jitter-free USB Audio with Asynchronous Transfer Mode, provides I2S interface for decoding, can support up to 48KHz/16Bit USB signal, support WASAPI,ASIO,KS Kernel Stream Mode.
Adopts 3X Clock structure design, ensures the DAC to obtain a first class sound performance. 3 correspondence level clocks are high precision, individually control multiple of 44.1KHz, multiple of 48KHz and USB signal transmission, dedicated for USB asynchronous transmission, and reduced Jitter to undetectable level.
Adopts the professional DAC chip WM8740*2 .
Built-in a OP+BUF architecture, OCL(output capacitor-less) with Split power supply, ultra-low distortion, low noise, high-slew-rate for analog signal.
1 way High-quality coaxial digital signal output
1 way High-quality Line Out,
One 2-Setting Gain Switch to set GAIN according to the headphones
1 Bass boost ON/OFF Switch
Rechargeable li-polymer battery with integrated charging system
Use aluminum-shielded case to prevent external interference noise

Customer Questions & Answers


Hello, do you have this item in stock? Regarding the XDUOO homepage it is not for sale ...  Thank you ...

12/14/14 9:38 AM Asked.

Yes, I have this item in stock. If you purchase it, i can ship it to you immediately. Thanks.    

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