KGUSS xDuoo XA-02 Balanced DAC Headphone AMP 사용자 설명서

1. 제품 소개

The xDuoo XA-02 is a high-fidelity small desktop balanced headphone amplifier that integrates USB, Optical, Coaxial, and Bluetooth audio decoding with an analog audio input. It features an OLED 1.3-inch screen for displaying working status. The USB audio decoder utilizes XMOS's XU316 chip, supporting digital audio signals up to PCM 32Bit/384kHz, MQA, and DSD256. Optical and coaxial inputs support maximum PCM 24Bit/192kHz and DSD64 (DOP). Bluetooth connectivity uses QCC5125, supporting popular codecs like aptX, aptX_HD, aptX_LL, LDAC, and AAC. The analog amplification part adopts a fully balanced Class A design structure, providing powerful output and strong load capacity to drive various headphones, enhancing sound dynamics and restoring audio fidelity.

이미지: 앞면과 뒷면 view of the xDuoo XA-02 Balanced DAC Headphone AMP, highlighting its compact design and various input/output options.

2. 제품 특징

• 1.3인치 OLED 화면: Displays music information and operational status clearly.
• USB Audio Decoding: Supports asynchronous transfer mode for PCM 32Bit/384kHz, MQA, and DSD256.
• 고성능 DAC 칩: Features ESS's ES9039Q2M chip for superior decoding of native DSD, DXD, and PCM signals.
• Advanced Bluetooth Audio: Bluetooth 5.1 with support for SBC, AAC, aptX, aptX_LL, aptX_HD, and LDAC codecs.
• Coaxial/Optical Audio: Supports PCM 24Bit/192kHz and DSD64 signal input.
• Optimized Power Design: Built-in filter circuit and high-efficiency power conversion circuit, with separate power supply to critical components for optimal performance.
• 클래스 A Amp정수기: Utilizes transistors in a Class A circuit for strong load capacity, capable of driving various headphones.
• Premium Audio Capacitors: Employs ELNA's SILMIC professional audio capacitors for power filter, ensuring soft, warm sound and splendid high frequencies.
• Output Relay Protection: Built-in relay protection prevents 'pop' noise during power on/off and safeguards connected headphones and the device.

Image: Diagram illustrating the truly balanced output path from decoding to the amplifier circuit, designed to reduce noise and improve channel separation.

Image: Visual representation of the various high-resolution music formats supported by the XA-02, including MQA 8X, DSD256, PCM 32Bit/384kHz, and DXD 32Bit/384kHz.

3. 부품 및 컨트롤

전면 패널

1. 6.35mm 헤드폰 출력: 표준 헤드폰 출력.
2. 4.4mm 밸런스드 헤드폰 출력: Balanced headphone output for enhanced audio quality.
3. 화면: 1.3-inch OLED display for status and settings.
4. 메뉴 키 : Press to enter or exit menu settings. Rotate the volume knob to select menu items, and press the volume knob to confirm.
5. Pairing (Bluetooth) Button: Long press for 3 seconds to force the device into Bluetooth pairing state.
6. 다기능 노브:
   • Turn clockwise to increase volume; turn counter-clockwise to decrease volume.
   • Short press to change input channel: USB In, Coaxial, Optical, and Bluetooth In.
   • In menu settings, press this button to confirm selection.

   Backlight Color Indication:

   용량	색상
   0-20	다크 시안
   21-45	Bright Cyan
   46-75	연한 빨간색
   76-99	진한 빨강

후면 패널

7. 보조 출력: Analog audio output from the DAC.
8. 동축 입력: 동축 디지털 오디오 입력.
9. 광학 IN: 광학 디지털 오디오 입력.
10. USB 입력 : USB 오디오 입력.
11. 업그레이드 인터페이스: 펌웨어 업데이트용.
12. 전원 입력: Connect to AC100-240V power supply.
13. 전원 켜기/끄기: 주 전원 스위치.
14. 블루투스 안테나: 블루투스 안테나의 연결 지점입니다.

Image: Front panel of the XA-02 with numbered labels indicating the 6.35mm headphone out, 4.4mm balanced headphone out, screen, menu key, pairing button, and multi-function knob.

Image: Rear panel of the XA-02 with numbered labels indicating AUX Out, Coaxial IN, Optical IN, USB IN, Upgrade interface, Power input, Power on/off switch, and Bluetooth antenna connection.

4. 설정

1. 전원 연결: Connect the power cable to the XA-02's power input (AC100-240V) and then to a power outlet. Ensure the power switch on the rear panel is in the 'OFF' position before connecting.
2. 블루투스 안테나 설치: Screw the provided Bluetooth antenna into the designated port on the rear panel.
3. 전원 켜기: Press the power switch on the rear panel to the 'ON' position. The OLED screen will light up.

5. 사용 설명서

1. Changing Input Channel: Short press the multi-function knob to cycle through available input channels: USB, Coaxial, Optical, and Bluetooth. The selected input will be displayed on the OLED screen.
2. 블루투스 페어링 : If you select Bluetooth input, long press the pairing (Bluetooth) button for 3 seconds to enter pairing mode. On your mobile device or computer, search for 'XA-02' in the Bluetooth settings and connect.
3. 볼륨 조절: Rotate the multi-function knob clockwise to increase the volume and counter-clockwise to decrease it. The volume level (0-99) and corresponding backlight color will be displayed on the screen.
4. 메뉴 설정: Press the menu key to enter the menu settings. Rotate the multi-function knob to navigate through options like FILTER (FIR1-FIR8), GAIN (G=H for High, G=L for Low), and BASS (ON/OFF). Press the multi-function knob to confirm your selection.
5. 헤드폰 연결: Connect your headphones to either the 6.35mm or 4.4mm balanced headphone output on the front panel.

Image: Close-up of the XA-02's digital volume knob and OLED display, showing volume level and input status. The backlight color changes with volume.

6. 오디오 장치에 연결

1. USB 입력 : Set the input to 'USB IN' on the screen. Use a USB cable to connect the XA-02 to an Apple, Windows, or Linux computer, mobile phone, tablet, or HiFi player. Connect your headphones to the XA-02. Ensure the XA-02 is set as the audio output device on your computer/device.
2. 동축/광 입력: Set the input to 'COAXIAL' or 'OPTICAL' on the screen. Use a Coaxial or Optical cable to connect the XA-02 to a player or CD player with Coaxial/Optical audio output. Connect your headphones to the XA-02.
3. 블루투스 입력 : Set the input to 'Bluetooth' on the screen. Connect your Bluetooth-enabled phone or computer to the XA-02 via Bluetooth. Connect your headphones to the XA-02.
4. 보조 출력: When using USB, Coaxial, Optical, or Bluetooth input, the AUX OUT can be connected to other Hi-Fi amplifiers or active speakers for further audio routing.

메모: To avoid noise, do not tie the audio cable together with the power cable.

Troubleshooting No Sound (Computer Connection): If there is no sound when connecting to a computer, check the PC audio output device settings. Click the PC start menu and select: Control Panel → Hardware and Sound → Hardware and Sound → Sound. After the computer displays an interface, click the <Play> option, and then select "xDuoo USB Audio" to set it as the default playback device.

Image: Diagram illustrating various connection methods for the XA-02, including USB, Coaxial, Optical, and Bluetooth inputs, and AUX output to speakers.

7. 액세서리 목록

The following items are included with your xDuoo XA-02:

• xDuoo XA-02 Unit
• 블루투스 안테나
• 6.35 to 3.5 Converter
• Type-C USB 케이블
• 전원 케이블
• 사용자 설명서
• 보증 카드

8. 사양

Samp링 속도 지원

• USB 입력 : PCM: 16-32Bit/44.1K-384KHz; DSD: DSD64-256; MQA: 44.1K-384KHz.
• COA/OPT IN: PCM: 16-24Bit/44.1-192KHz; DSD: DSD64(DOP).

6.35mm Headphone Output Parameters

• Output Power: 910mW (32Ω load)
• 주파수 응답: 20Hz-60KHz(±0.5dB)
• 누화: ≥71dB
• SNR: 119dB (A Weight)
• THD+N: 0.002%

4.4mm Balanced Headphone Output Parameters

• Output Power: 2000mW (32Ω load)
• 주파수 응답: 20Hz-60KHz(±0.5dB)
• 누화: ≥118dB
• SNR: 121dB (A Weight)
• THD+N: 0.0004%

AUX 출력 파라미터

• 출력 레벨: 2.6Vrms
• 주파수 응답: 20Hz-60KHz(±0.2dB)
• 누화: ≥118dB
• SNR: 121dB (A Weight)
• THD+N: 0.0004% 이하

9. Maintenance Instruction and Warranty Terms

유지 보수 지침

1. Do not place the unit under direct sunlight or near heating equipment.
2. Do not place the machine in a high temperature or dusty place, or allow any items with water to be placed on it.
3. Do not use chemical solvents to clean the machine. Otherwise, it may damage the surface coating. Please use a soft, dry cloth to wipe it.
4. Turn the unit power off when not using it for a long time.
5. Do not attempt to repair the unit by yourself. If there are any problems, you should send it to local dealers for repair.

보증 정보

Our products come with 12-months free warranty services from the date of sale. If the warranty period is expired, our company will charge costs depending on the product fault conditions. Accessories are not covered under warranty.

10. 문제 해결

If you encounter issues with your xDuoo XA-02, please refer to the following common troubleshooting steps:

• 전원 없음: Ensure the power cable is securely connected to both the unit and the power outlet, and that the power switch on the rear panel is in the 'ON' position.
• 소리 없음:
  • Check if the correct input source (USB, Coaxial, Optical, Bluetooth) is selected on the XA-02.
  • 헤드폰이 6.35mm 또는 4.4mm 출력 단자에 제대로 연결되어 있는지 확인하십시오.
  • Increase the volume using the multi-function knob.
  • If using a computer, ensure the XA-02 is selected as the default audio output device (refer to 'Connecting to Audio Devices' section for detailed steps).
  • 블루투스를 사용하는 경우, 기기가 제대로 페어링되고 연결되었는지 확인하십시오.
• 왜곡된 소리:
  • 오디오 소스에 품질 문제가 있는지 확인하세요.
  • 오디오 케이블이 단단히 연결되어 있고 손상되지 않았는지 확인하십시오.
  • Try a different audio cable or input source.
  • 음량을 줄여서 왜곡 현상이 지속되는지 확인해 보세요.
• 블루투스 연결 문제:
  • Ensure the Bluetooth antenna is securely installed.
  • Make sure the XA-02 is in Bluetooth pairing mode (long press the pairing button).
  • 소스 기기의 블루투스가 켜져 있고 범위 내에 있는지 확인하십시오.
  • 기기의 페어링을 해제한 후 다시 페어링해 보세요.
• 단위가 응답하지 않음: Try turning the unit off and on again. If the problem persists, disconnect the power for a few minutes and then reconnect.

If these steps do not resolve the issue, please contact your local dealer or customer support for further assistance.