1. 製品紹介
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.
画像: 前面と背面 view of the xDuoo XA-02 Balanced DAC Headphone AMP, highlighting its compact design and various input/output options.
ビデオ: オーバーview of the xDuoo XA-02 Balanced DAC Headphone AMP、ショーasinデザインと主な機能について説明します。
2 製品の特徴
- 1.3インチOLEDスクリーン： Displays music information and operational status clearly.
- USBオーディオデコード: Supports asynchronous transfer mode for PCM 32Bit/384kHz, MQA, and DSD256.
- 高性能DACチップ： 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.
- クラスA Amplifier： 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.部品とコントロール
フロントパネル
- 6.35mmヘッドフォン出力: 標準のヘッドフォン出力。
- 4.4mmバランスヘッドフォン出力: バランス型ヘッドフォン出力により、音質が向上します。
- 画面： 1.3-inch OLED display for status and settings.
- メニューキー： Press to enter or exit menu settings. Rotate the volume knob to select menu items, and press the volume knob to confirm.
- Pairing (Bluetooth) Button: Long press for 3 seconds to force the device into Bluetooth pairing state.
- 多機能ノブ：
- 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:
音量 色 0-20 ダークシアン 21-45 Bright Cyan 46-75 ライトレッド 76-99 ディープレッド
背面パネル
- AUX アウト: Analog audio output from the DAC.
- 同軸入力: 同軸デジタルオーディオ入力。
- 光入力: 光デジタルオーディオ入力。
- USB入力： USBオーディオ入力。
- Upgrade Interface: ファームウェアの更新用。
- 電源入力: Connect to AC100-240V power supply.
- 電源オン/オフ: 主電源スイッチ。
- ブルートゥースアンテナ: Bluetoothアンテナの接続ポイント。
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. セットアップ
- 電源接続: 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.
- Bluetoothアンテナの取り付け: Screw the provided Bluetooth antenna into the designated port on the rear panel.
- 電源オン: Press the power switch on the rear panel to the 'ON' position. The OLED screen will light up.
Video: Demonstrates the initial setup of the xDuoo XA-02, including connecting the power cable, installing the Bluetooth antenna, and powering on the device.
5. 操作手順
- 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.
- Bluetoothのペアリング： 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.
- 音量調整: 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.
- メニュー設定: 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.
- ヘッドフォンの接続: 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. オーディオデバイスへの接続
- USB入力： 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.
- 同軸/光入力: 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.
- Bluetooth入力： 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.
- AUX出力： 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.
注記： 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. 付属品一覧
The following items are included with your xDuoo XA-02:
- xDuoo XA-02 Unit
- Bluetoothアンテナ
- 6.35 to 3.5 Converter
- タイプCのUSBケーブル
- 電源ケーブル
- ユーザーマニュアル
- 保証書
Video: An unboxing video of the xDuoo XA-02, showing all included accessories.
8. 仕様
| パラメータ | 価値 |
|---|---|
| 電源 | 交流100-240V |
| 画面 | 1.3インチOLEDスクリーン |
| 対応OS | Windows, Linux, Mac OS X, iOS, Android system |
| Bluetoothサポートフォーマット | SBC、AAC、aptX、aptX LL、aptX HD、LDAC |
| 適切なヘッドホンインピーダンス | 16Ω～600Ω |
| サイズ | 20 × 17.5 × 4.7 cm |
| 重さ | 0.9キロ |
Sampレート サポート
- USB入力： 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)
- 周波数応答：20Hz-60KHz（±0.5dB）
- クロストーク: ≥71dB
- SNR: 119dB (A Weight)
- THD + N：0.002％
4.4mm Balanced Headphone Output Parameters
- Output Power: 2000mW (32Ω load)
- 周波数応答：20Hz-60KHz（±0.5dB）
- クロストーク: ≥118dB
- SNR: 121dB (A Weight)
- THD + N：0.0004％
AUX OUTパラメータ
- 出力レベル：2.6Vrms
- 周波数応答：20Hz-60KHz（±0.2dB）
- クロストーク: ≥118dB
- SNR: 121dB (A Weight)
- THD+N: ≤0.0004%
9. Maintenance Instruction and Warranty Terms
メンテナンス手順
- Do not place the unit under direct sunlight or near heating equipment.
- Do not place the machine in a high temperature or dusty place, or allow any items with water to be placed on it.
- 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.
- Turn the unit power off when not using it for a long time.
- Do not attempt to repair the unit by yourself. If there are any problems, you should send it to local dealers for repair.
保証情報
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。 トラブルシューティング
If you encounter issues with your xDuoo XA-02, please refer to the following common troubleshooting steps:
- 電源なし: 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.
- 音が出ない:
- Check if the correct input source (USB, Coaxial, Optical, Bluetooth) is selected on the XA-02.
- Verify that your headphones are properly connected to either the 6.35mm or 4.4mm output.
- 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).
- Bluetooth を使用している場合は、デバイスが適切にペアリングされ、接続されていることを確認してください。
- 歪んだ音:
- オーディオソースの品質問題がないか確認してください。
- オーディオ ケーブルがしっかりと接続され、損傷がないことを確認します。
- Try a different audio cable or input source.
- 音量を下げて、歪みが続くかどうかを確認します。
- Bluetooth接続の問題:
- Ensure the Bluetooth antenna is securely installed.
- Make sure the XA-02 is in Bluetooth pairing mode (long press the pairing button).
- ソースデバイスの Bluetooth が有効になっており、範囲内にあることを確認します。
- デバイスのペアリングを解除して再度ペアリングしてみてください。
- ユニットが応答しません: 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.