1. Rhagymadrodd
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. Nodweddion Allweddol
- Multi-functional device: Functions as a HiFi tube preamplifier, USB DAC, and headphone ampllewywr.
- 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.
- Clustffon 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. Cynnwys Pecyn
Ticiwch y blwch ar gyfer yr eitemau canlynol:
- 1 x P1 Preamp Uned
- 2 x GE5654 Vacuum Tubes
- Addasydd Pŵer 1 x DC 12V
- 1 x Cebl USB
- 1 x Antena Bluetooth
- 1 x Llawlyfr Defnyddiwr

Image: Douk Audio P1 package contents including the preamp unit, vacuum tubes, power adapter, USB cable, and Bluetooth antenna.
4. Cynnyrch Drosview
4.1 Panel Blaen

Delwedd: Blaen 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.
- Botwm Pŵer: Pwyswch i droi’r uned ymlaen / ODDI.
- Dewisydd Mewnbwn: Switch between Bluetooth (BT), USB, and RCA inputs.
- Rheolaethau Tôn:
- Knob Bas: Adjusts low-frequency output.
- Knob Cyfrol: Yn rheoli cyfaint allbwn cyffredinol.
- Knob Trebl: Adjusts high-frequency output.
- Tone Bypass Switch: Toggles tone controls (Bass/Treble) ON/OFF. When OFF, tone controls are bypassed for a pure signal path.
- Dangosydd LED: Displays current input mode (Blue for Bluetooth, Orange for USB, Red for RCA).
- Allbwn Clustffon 3.5mm: Connect headphones (TRRS port not supported).
4.2 Panel Cefn

Delwedd: Cefn view of the Douk Audio P1, showing PC-USB input, RCA inputs, RCA outputs, DC 12V power input, and Bluetooth antenna port.
- Mewnbwn PC-USB: Connect to a computer for USB DAC functionality.
- Mewnbynnau RCA (Chwith/Dde): Cysylltwch ffynonellau sain allanol trwy geblau RCA.
- Allbynnau RCA (Chwith/Dde): Cysylltwch â phŵer amplifyddion neu siaradwyr gweithredol.
- Mewnbwn Pwer DC 12V: Cysylltwch yr addasydd pŵer 12V a ddarperir.
- Porthladd Antena Bluetooth: Attach the included Bluetooth antenna for wireless connectivity.
5. Cyfarwyddiadau Gosod
5.1 Installing Vacuum Tubes
The P1 unit comes with two GE5654 vacuum tubes. Follow these steps to install them:
- Carefully remove the metal rings around the tube sockets by unscrewing them counter-clockwise.
- Gently straighten the pins of each vacuum tube if they are bent.
- Align the pins of the vacuum tube with the corresponding holes in the socket. Ensure correct orientation.
- Gently push the tube into the socket until it is firmly seated. Do not force it.
- Screw the metal rings back on clockwise to secure the tubes.
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 Pŵer Cysylltu
- Connect the provided DC 12V power adapter to the "DC 12V" input port on the rear panel of the P1.
- Plygiwch yr addasydd pŵer i mewn i soced wal addas.
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. Cyfarwyddiadau Gweithredu
6.1 Pweru Ymlaen/Diffodd
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 Selecting Input Source
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:
- Glas: Mewnbwn Bluetooth
- Oren: Mewnbwn USB
- Coch: Mewnbwn RCA
6.3 Cysylltiad Bluetooth
- Select Bluetooth input using the Input Selector. The LED will turn blue and blink, indicating pairing mode.
- On your audio device (smartphone, tablet, etc.), enable Bluetooth and search for "BT HIFI AUDIO".
- Select "BT HIFI AUDIO" to pair. Once connected, the blue LED will stop blinking and remain solid.
- 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 Connection
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 amplifier neu siaradwyr gweithredol.

Image: The Douk Audio P1 connected to a laptop via USB and to speakers via RCA, demonstrating its versatile connectivity options.
6.6 Addasu Cyfaint a Thôn
- Knob Cyfrol: Cylchdroi clocwedd i gynyddu'r gyfrol, gwrthglocwedd i leihau.
- Knob Bas: Adjusts the level of low frequencies.
- Knob Trebl: 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. cynnal
7.1 Tube Replacement
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.

Image: Close-up of the Douk Audio P1 showing the GE5654 vacuum tubes, which can be replaced for sound customization.
7.2 Glanhau
Defnyddiwch frethyn meddal, sych i lanhau'r uned. Peidiwch â defnyddio glanhawyr hylif na thoddyddion.
8. manylebau
| Nodwedd | Manyleb |
|---|---|
| Math o Gynnyrch | HiFi Tube Preamp, USB DAC, Headphone Amp |
| Model Tiwb | GE5654 (Replaceable with 6J1, 6J2, 6J3, 6J4, 6J5, 6*1N, 6AK5) |
| Mewnbynnau Sain | Bluetooth 5.0, USB, RCA |
| Allbynnau Sain | RCA, 3.5mm Headphone Jack |
| Sglodion Bluetooth | QCC3008 (Supports APTX, APTX-LL) |
| USB DAC Chip | CM6642 (Supports 24bit 192KHz) |
| Clustffon Amp Sglodion | 2 x NE5532 (Classic 47 architecture) |
| Rhwystr Clustffonau | 32-300 ohms |
| Rheoli Tôn | Bass, Treble (with bypass switch) |
| Cyflenwad Pŵer | DC 12V |
| Cydweddoldeb | Windows, Mac, Linux, iPod, Smartphones, MP3 players, TVs, Blu-ray players, Echo Dot, CD players |
9. Datrys Problemau
- Dim Sain:
- 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).
- Addaswch y bwlyn cyfaint.
- If using Bluetooth, ensure the device is paired and connected. Try clearing Bluetooth history on both devices and re-pairing.
- Sain ystumiedig:
- Reduce the volume on both the P1 and the source device.
- Gwiriwch geblau sain am ddifrod neu gysylltiadau rhydd.
- Ensure the vacuum tubes are properly seated.
- Problemau paru Bluetooth:
- 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.
- Tubes Not Glowing:
- Ensure the unit is powered ON.
- Check if the tubes are properly seated in their sockets.
10. Gwybodaeth Diogelwch
- Peidiwch ag amlygu'r uned i ddŵr na lleithder gormodol.
- Osgowch osod yr uned ger ffynonellau gwres neu mewn golau haul uniongyrchol.
- Peidiwch â cheisio agor na chynnal a chadw'r uned eich hun. Cyfeiriwch yr holl waith cynnal a chadw at bersonél cymwys.
- Cadwch allan o gyrraedd plant.
- Defnyddiwch yr addasydd pŵer a ddarperir yn unig.
11. Gwarant a Chefnogaeth
For warranty information, technical support, or service inquiries, please contact Douk Audio customer support through your retailer or visit the official Douk Audio websafle. Cadwch eich prawf prynu ar gyfer hawliadau gwarant.