xDuoo XA-02 High Performance Balanced DAC and Headphone Amplifier User Manual

XA-02 High Performance Balanced DAC and Headphone Amplifier

Specifications

• Power Supply: AC 100-240V

• Screen: 1.3 inch OLED screen

• Compliant OS: Windows, Linux, Mac OS X, iOS, Android
  system

• USB Sampling Rate Support: PCM 32Bit/384KHz, DSD256, MQA

Product Usage Instructions

Safety Instructions

Before operating the machine, please adhere to the following
safety instructions:

1. Avoid sprinkling water on the unit and refrain from placing
   liquid-filled items on it.

2. Due to its Class A amplifier nature, it may get hot during
   operation.

3. Do not attempt to open or modify the machine’s internals as it
   may impact performance and quality.

4. Ensure proper ventilation around the unit and avoid direct
   sunlight exposure.

Operation Notes

1. Double-check connections before powering on the device.

2. Avoid using mobile phones near the amplifier to prevent noise
   interference.

3. Disconnect power cables before moving the machine.

Product Introduction

The XA-02 is a high-performance balanced DAC & headphone
amplifier with the following features:

• 1.3 inch OLED screen for displaying music information

• Support for USB audio decoding up to PCM 32Bit/384KHz, DSD256,
  and MQA

• DAC chip utilizing ESS’s ES9039Q2M chip for superior decoding
  performance

• Bluetooth audio decoding support with formats like aptX, AAC,
  aptX_LL, aptX_HD, LDAC

• Coaxial/optical audio decoding up to PCM 24bit/192Khz and DSD64
  signal

• Built-in filter circuit and high-efficiency power conversion
  circuit for optimized power supply

Parts and Controls

The product includes various parts and controls such as
headphone outputs, screen, menu key, pairing button, knob, AUX out,
input channels (USB, Coaxial, Optical, Bluetooth), upgrade
interface, power input, power on/off, and Bluetooth antenna.

Connecting to the Audio Device

To connect the XA-02 to an audio device, use the appropriate
input channel (USB IN, Coaxial IN, Optical IN) based on your audio
source. Ensure proper connections and power on the device after
checking all connections.

FAQ

Q: Can I modify the internal circuit of the XA-02 for

customization?

A: It is advised not to open or modify the internal circuit of
the machine as it may affect performance and quality.

Q: How do I adjust the volume on the XA-02?

A: Use the knob on the device by turning it clockwise to
increase volume and counterclockwise to decrease volume.

XA-02
User Manual
High Performance Balanced DAC & Headphone Amplifier

About Us
For more product information,please visit our Http://www.xduoo.com Or scan us directly to enter the offical website
Before operating this machine, please read this manual carefully and keep it in a safe place for future reference.
1.Safety Instructions
1.Please do not sprinkle water on this unit, please do not place vases or items filled with liquid on the machine.
2.Because this unit is a Class A amplifier, it is normal to have some hot at work. 3.Please do not open the machine for maintenance or modification by yourself. Opening the
machine and arbitrarily modifying the internal circuit will make it difficult for maintenance personnel to repair the machine, and will affect the performance or quality of the machine. 4.Please place this unit in a well- ventilated place, avoid direct sunlight, and the machine should leave at least the following clearances:

30

10

10

10

Top30CM Side10CM

Back10CM

2.Operation Notes:
1.Turn on the powerBefore turning it on, please check again whether connections are correct . 2.Using mobile phoneUsing mobile phone near the amp may cause noise when playback. If
this happens, move mobile phone away from the amp. 3.Move the machinePlease disconnect the power cables before moving the machine.

3. Product introduction
XA-02 is a high-fidelity small desktop balanced headphone amplifier that integrates USB, optical, coaxial, Bluetooth audio decoding and analog audio in, and it has an OLED 1.3 inch screen that can intuitively display various working status; USB audio decoder used XMOS’s XU316, which can support up to digital audio signal PCM 32bit/384KHz, MQA and DSD256. Optical and coaxial in support maximum PCM 24bit/192KHz, DSD64 (DOP). Bluetooth uses QCC5125, which support high-definition formats such as aptX, aptX_HD, and LDAC. The analog amplification part adopts a fully balanced small class A design structure that can bring delicate and soft vocals without losing the explosive power and sense of speed of the music, and is equipped with +/-12V power supply as a power amplifier, with strong load capacity, it can easily drive many kind headphones, and greatly enhance the dynamics of the sound field, which can restore the sense of reality of the concert.

4.Product Features
1.With 1.3 inch OLED screen, display the information of music 2.Support USB audio decoding functions, work in asynchronous transfer mode, support up to
PCM 32Bit/384KHz,DSD256 and MQA 3.DAC chip uses ESS’s ES9039Q2M chip to support native DSD, DXD and PCM signals, better
decoding performance 4.Support bluetooth audio decoding, bluetooth 5.1, support SBC AACaptXaptX_LL
aptX_HDLDAC format 5.Support coaxial/optical audio decoding, support up to PCM 24bit / 192Khz and DSD64 signal 6.Built-in filter circuit and high-efficiency power conversion circuit, optimize the power supply
design through the LDO circuit, and separately supply power to the decoder chip, LPF, amplifier, XMOS, and digital receiver chip 7.Using transistors for class A circuit, with strong load capacity, it can easily drive many kind headphones 8.Use ELNA’s SILMIC professional audio capacitor for power filter capacitor, the sound is soft, warm and soft, and the high frequency is gorgeous 9.Built-in output relay protection to avoid the “pop” sound of switching on and off, and to protect the earphone and machine under abnormal conditions.

5.Parts and Controls

1.6.35mm headphone out 2.4.4mm Balanced headphone out 3.Screen 4.Menu key: press this key to enter or exit the menu setting windows, then rotate the volume
knob to select the menu which you want, and press the volume knob to confirm. 5.Pairing (bluetooth) button: long press for 3 seconds to force into pairing state. 6.Knob (Multi-function)
1Turn up the volume clockwise; turn it down counterclockwise 2Short press to change input channel: USB in, Coaxial, Optical and Bluetooth in 3In the menu settings windows, press this button to setting. BacklightThe light changes color according to the volume, as follows

Backlight Volume

Dark cyanBright cyan

0-20

21-45

Light redDeep red

46-75

76-99

7.AUX Out: output from DAC. 8.Coaxial IN 9.Optical IN 10.USB IN 11.Upgrade interface 12.Power input: connect to AC100-240V. 13.Power on/off 14.Bluetooth antenna

14

12

3

45 6

7 8 9 10 11

12 13

6.Parameters
1.Power SupplyAC 100-240V. 2.Screen: 1.3 inch OLED screen. 3.Compliant OSWindows, Linux, Mac OS X, IOS, Android system. 4.USB Sampling Rate Support:
· PCM16~32Bit/44.1~384kHz · DSDDSD64~DSD256 · MQA44.1~384kHz. 5.COA/OPT Sampling Rate Support · PCMPCM16~24Bit/44.1~192kHz · DSDDSD64(DOP). 6.Bluetooth support formatsSBCAACatpXatpX LLatpX HDLDAC 7.6.35mm Headphone Output Parameters · Output Power910mW(32 load) · Frequency Response: 20Hz~60kHz(±0.5dB) · Crosstalk71dB · SNR119dB(A Weight · THD+N0.002%. 8.4.4mm Bal Headphone Output Parameters · Output Power2000mW(32 load) · Frequency Response: 20Hz~60kHz(±0.5dB) · Crosstalk118dB · SNR121dB(A Weight · THD+N0.0004%. 9.AUX OUT Parameters · Output level2.6Vrms · Frequency Response20Hz~60kHz(±0.5dB) · Crosstalk118dB · SNR121dB(A Weight · THD+N0.0004%. 10.Suitable headphone impedance16~600. 11.Size20× 17.5× 4.7CM. 12.Weight0.9KG.

7.Accessories

AC Cable

1PC

USB Cable

1PC

User’s Manual

1PC

Warranty Card

1PC

6.5 to 3.5 converter 1PC

8.Connecting to the Audio Device

1.Setting INPUT to the screen display USB IN, use the USB cable to connect to an Apple/windows/Linux system computer, connect headphone, playing music on computer and enjoy it. (Need to set this unit as an audio output device on the computer) .

2.Setting INPUT to the screen display COAXIAL/OPTICAL, use Coaxial/Optical cable to connect with player or CD which with Coaxial /Optical audio output, playing music, connect headphone and enjoy it.
3.Setting INPUT to the screen display Bluetooth, connect Bluetooth to phone or computer, playing music, connect headphone and enjoy it.
4.When connect USB, COAXIAL, OPTICAL or Bluetooth, the AUX OUT can be connected to other HI-FI amplifier or Active speakers.
Note: Do not tie the audio cable together with the power cable to avoid noise. 5.When connecting to a computer to play music, if there is no sound, please check whether the
PC audio output device settings are correct, the steps are as follows: Click the PC start menu and select: Control PanelHardware and SoundHardware and SoundSound. After the computer pops up an interface, click the option, and then select to set it as the default playback device.
9.Warranty Information
Our products can enjoy 12-month free warranty services from the date of the sale, if the warranty period is expired, our company will charge parts cost depend on the product fault conditions. Accessories are not covered under warranty.
Company Name xDuoo Technology Co.,LTD Company website: www.xduoo.com After- sales hotline: +86-0755-29799189 (Monday to Friday, 900-1200 and1400-1700) After-sales address: Room 1510, Building F, Mingyue Huadu, Xixiang Street, Baoan District, Shenzhen City

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