ドゥークオーディオP1

Douk Audio P1 GE5654 Tube Preamp 取扱説明書

モデル: P1

1. はじめに

The Douk Audio P1 is a versatile HiFi vacuum tube preamplifier, USB DAC, and headphone amplifier designed to deliver a clear, warm, dynamic, and sweet audio experience. It supports multiple audio inputs and outputs, making it suitable for various home audio systems.

2. 主な特徴

  • Multi-functional device: Functions as a HiFi tube preamplifier, USB DAC, and headphone amplifier。
  • High-quality sound: Delivers clear, warm, dynamic, and sweet audio for a premium listening experience.
  • Multiple audio inputs: Supports Bluetooth, USB, and RCA connections.
  • Dual audio outputs: Provides RCA and 3.5mm headphone outputs.
  • Bluetooth 5.0 with APTX, APTX-LL, and APTX-HD: Ensures lossless audio transmission for high-fidelity wireless streaming.
  • PC-USB (CM6642) support: Compatible with 24bit 192KHz audio, supporting Windows, Mac, and Linux systems.
  • ヘッドホン amplifier: Utilizes two NE5532 classic 47 headphone amp architecture, capable of driving 32-300 ohm headphones.
  • Tone control bypass: Features a bypass switch to enable/disable tone controls (treble and bass knobs) for original sound or detailed adjustment.
  • Wide compatibility: Connects to various stereo home audio devices such as iPods, smartphones, MP3 players, TVs, Blu-ray players, Echo Dot, and CD players.

3. パッケージ内容

以下の項目のボックスにチェックを入れてください。

  • 1 x P1 Preamp ユニット
  • 2 x GE5654 Vacuum Tubes
  • 1 x DC 12V電源アダプター
  • USBケーブル1本
  • 1xBluetoothアンテナ
  • ユーザーマニュアル x 1
Douk Audio P1 Package Contents

Image: Douk Audio P1 package contents including the preamp unit, vacuum tubes, power adapter, USB cable, and Bluetooth antenna.

4.製品オーバーview

4.1フロントパネル

Douk Audio P1 Front Panel

画像: 正面 view of the Douk Audio P1, showing the power button, input selector, tone controls (bass, volume, treble), tone bypass switch, LED indicator, and headphone output.

  • 電源ボタン: を押して、ユニットのオン/オフを切り替えます。
  • 入力セレクター: Switch between Bluetooth (BT), USB, and RCA inputs.
  • トーンコントロール:
    • 低音ノブ: 低周波出力を調整します。
    • ボリュームノブ: 全体の出力ボリュームをコントロールします。
    • トレブルノブ: 高周波出力を調整します。
  • Tone Bypass Switch: Toggles tone controls (Bass/Treble) ON/OFF. When OFF, tone controls are bypassed for a pure signal path.
  • LEDインジケーター: Displays current input mode (Blue for Bluetooth, Orange for USB, Red for RCA).
  • 3.5mmヘッドフォン出力: Connect headphones (TRRS port not supported).

4.2 背面パネル

Douk Audio P1 Rear Panel

画像: 背面 view of the Douk Audio P1, showing PC-USB input, RCA inputs, RCA outputs, DC 12V power input, and Bluetooth antenna port.

  • PC-USB入力: Connect to a computer for USB DAC functionality.
  • RCA入力(L/R): RCA ケーブルを介して外部オーディオ ソースを接続します。
  • RCA出力(L/R): 電源に接続する ampライブ配信者またはアクティブスピーカー。
  • DC 12V電源入力: 付属の12V電源アダプターを接続します。
  • Bluetoothアンテナポート: Attach the included Bluetooth antenna for wireless connectivity.

5. セットアップ手順

5.1 Installing Vacuum Tubes

The P1 unit comes with two GE5654 vacuum tubes. Follow these steps to install them:

  1. チューブソケットの周りの金属リングを反時計回りに回して慎重に取り外します。
  2. Gently straighten the pins of each vacuum tube if they are bent.
  3. Align the pins of the vacuum tube with the corresponding holes in the socket. Ensure correct orientation.
  4. Gently push the tube into the socket until it is firmly seated. Do not force it.
  5. 金属リングを時計回りに回して締め、チューブを固定します。

Video: This video demonstrates the correct method for installing vacuum tubes into the amplifier unit. Ensure pins are straight and gently insert the tubes into their sockets.

5.2 電源の接続

  1. Connect the provided DC 12V power adapter to the "DC 12V" input port on the rear panel of the P1.
  2. 電源アダプタを適切な壁のコンセントに差し込みます。

5.3 Attaching Bluetooth Antenna

Screw the included Bluetooth antenna into the antenna port on the rear panel. Ensure it is securely tightened for optimal signal reception.

6. 操作手順

6.1 電源のオン/オフ

Press the Power button on the front panel to turn the P1 unit ON or OFF. The vacuum tubes will glow once powered on.

6.2 入力ソースの選択

Use the Input Selector button on the front panel to cycle through the available input sources: Bluetooth (BT), USB, and RCA. The LED indicator will change color to show the active input:

  • 青: Bluetoothの入力
  • オレンジ: USB入力
  • 赤: RCA入力

6.3 Bluetooth接続

  1. Select Bluetooth input using the Input Selector. The LED will turn blue and blink, indicating pairing mode.
  2. On your audio device (smartphone, tablet, etc.), enable Bluetooth and search for "BT HIFI AUDIO".
  3. Select "BT HIFI AUDIO" to pair. Once connected, the blue LED will stop blinking and remain solid.
  4. If you encounter issues, clear previous Bluetooth connections on your device and the P1 unit (see Troubleshooting).

Video: This video demonstrates how to connect a Bluetooth device to the amplifier and play music. It shows the pairing process and audio playback.

6.4 USB DAC接続

Connect the P1 to your computer using the provided USB cable. Select USB input on the P1. Your computer should automatically recognize the P1 as an audio output device. Select it in your sound settings.

6.5 RCA Input/Output

Use RCA cables to connect external audio sources (e.g., CD player, TV) to the RCA input ports. Connect the RCA output ports to a power ampライファまたはアクティブスピーカー。

Douk Audio P1 with Laptop and Speakers

Image: The Douk Audio P1 connected to a laptop via USB and to speakers via RCA, demonstrating its versatile connectivity options.

6.6音量とトーンの調整

  • ボリュームノブ: 音量を上げるには時計回りに回し、音量を下げるには反時計回りに回します。
  • 低音ノブ: Adjusts the level of low frequencies.
  • トレブルノブ: Adjusts the level of high frequencies.
  • Tone Bypass Switch: Flip this switch to bypass the Bass and Treble controls. This provides a direct, unaltered audio signal.

7. メンテナンス

7.1 チューブの交換

The GE5654 vacuum tubes can be replaced with compatible tubes such as 6J1, 6J2, 6J3, 6J4, 6J5, 6*1N, 6AK5, and similar types to customize the sound profile. Always ensure the unit is powered off and unplugged before replacing tubes. Follow the installation steps in Section 5.1.

Douk Audio P1 with GE5654 Vacuum Tubes

Image: Close-up of the Douk Audio P1 showing the GE5654 vacuum tubes, which can be replaced for sound customization.

7.2 クリーニング

本体の清掃には、柔らかく乾いた布をご使用ください。液体クリーナーや溶剤は使用しないでください。

8. 仕様

特徴仕様
製品タイプHiFi Tube Preamp, USB DAC, Headphone Amp
チューブモデルGE5654 (Replaceable with 6J1, 6J2, 6J3, 6J4, 6J5, 6*1N, 6AK5)
オーディオ入力Bluetooth 5.0, USB, RCA
オーディオ出力RCA, 3.5mm Headphone Jack
BluetoothチップQCC3008 (Supports APTX, APTX-LL)
USB DAC ChipCM6642 (Supports 24bit 192KHz)
ヘッドホン Amp チップ2 x NE5532 (Classic 47 architecture)
ヘッドホンインピーダンス32~300オーム
トーンコントロールBass, Treble (with bypass switch)
電源DC12V
互換性Windows, Mac, Linux, iPod, Smartphones, MP3 players, TVs, Blu-ray players, Echo Dot, CD players

9。 トラブルシューティング

  • 音が出ない:
    • Ensure the power adapter is securely connected and the unit is powered ON.
    • Check all audio cables (RCA, USB, headphone) are correctly connected.
    • Verify the correct input source is selected on the P1 (check LED color).
    • 音量つまみを調整します。
    • If using Bluetooth, ensure the device is paired and connected. Try clearing Bluetooth history on both devices and re-pairing.
  • 歪んだ音:
    • Reduce the volume on both the P1 and the source device.
    • オーディオ ケーブルに損傷や接続の緩みがないか確認します。
    • Ensure the vacuum tubes are properly seated.
  • Bluetooth ペアリングの問題:
    • Ensure the P1 is in Bluetooth pairing mode (blinking blue LED).
    • Clear "BT HIFI AUDIO" from your device's Bluetooth history and try pairing again.
    • Move closer to the P1 unit to ensure a strong signal.
  • チューブが光らない:
    • Ensure the unit is powered ON.
    • チューブがソケットに正しく取り付けられているかどうかを確認します。

10. 安全情報

  • ユニットを水や過度の湿気にさらさないでください。
  • ユニットを熱源の近くや直射日光の当たる場所に置かないでください。
  • ユニットを自分で開けたり修理したりしないでください。修理はすべて資格のある専門家に依頼してください。
  • お子様の手の届かない場所に保管してください。
  • 付属の電源アダプターのみを使用してください。

11. 保証とサポート

For warranty information, technical support, or service inquiries, please contact Douk Audio customer support through your retailer or visit the official Douk Audio webサイトでご確認ください。保証請求のために購入証明書を保管してください。

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