1. Introducció
Thank you for choosing the Douk Audio X1 HiFi Stereo Bluetooth 5.0 Vacuum Tube Amplificador. Això amplifier is designed to provide a high-fidelity audio experience with its versatile input options and powerful output. Featuring genuine JAN5654 vacuum tubes, it delivers a warm, rich, and transparent sound, enhancing your listening pleasure. This manual will guide you through the setup, operation, and maintenance of your new ampmés viu.

Figura 1: Frontal view of the Douk Audio X1 Vacuum Tube Ampmés viu.
2. Informació de seguretat
- Font d'alimentació: Feu servir només l'adaptador de corrent proporcionat. Assegureu-vos que el volumtage coincideix amb la vostra font d'alimentació local.
- Ventilació: No bloquegeu les obertures de ventilació. Assegureu-vos que hi hagi un flux d'aire adequat al voltant amplificador per evitar el sobreescalfament.
- Humitat: Mantenir el amplifier away from water, moisture, and high humidity. Do not operate with wet hands.
- Fonts de calor: Eviteu col·locar el ampa prop de fonts de calor com ara radiadors, registres de calor, estufes o altres aparells que produeixen calor.
- Neteja: Desconnecteu l'alimentació abans de netejar. Feu servir un drap suau i sec. No utilitzeu netejadors líquids ni netejadors en aerosol.
- Manteniment: No intenteu atendre aquest producte vosaltres mateixos. Consulteu tots els serveis a personal de servei qualificat.
- Manipulació de tubs: Vacuum tubes can become hot during operation. Avoid touching them directly. Allow them to cool before handling or replacing.
3. Què hi ha a la caixa
En obrir el paquet, comproveu que tots els elements que s'enumeren a continuació hi són presents i que es troben en bon estat:
- 1x Douk Audio X1 Ampmés viu
- 2x JAN5725 Vacuum Tubes (Note: Product description mentions JAN5654, but packing list image shows JAN5725. Both are compatible small signal pentodes.)
- 1x font d'alimentació de 32V/5A
- 1x Bluetooth Antenna
- 1x Manual d'usuari (aquest document)

Figure 2: Included components in the product packaging.
4. Característiques del producte
- Entrades versàtils: Features Bluetooth 5.0, Stereo RCA, and MM Phono inputs. The MM phono input converts phono signals to line level, ensuring clear and clean sound for turntables. The 3.5mm AUX input amplifies low-level audio signals from various devices.
- JAN5654 Vacuum Tubes: Default with JAN5654 tubes (or JAN5725 as per packing list), which enhance detail, transparency, richness, and dynamic range. The pluggable tube socket allows for easy tube rolling to customize sound.
- Alta potència de sortida: Utilizes a TDA7498E amplifier IC, delivering a maximum output power of 160W + 160W (4Ω). The included 32V/5A power supply efficiently drives most home passive speakers.
- Low Frequency Output: Includes a dedicated subwoofer output, enabling easy connection to an active subwoofer for a powerful 2.1 stereo audio system.
- Tone Control & Bass Boost: Adjustable treble and bass knobs allow for sound customization. A bypass function is available for original sound playback. The bass boost switch significantly enhances bass effects for a more impactful audio experience.
- Disseny exquisit: Features a durable metal black case and illuminated vacuum tubes (blue or orange light options), providing a fashionable and attractive aesthetic suitable for various home and desktop audio setups.

Figure 3: High output power and dedicated subwoofer output.

Figure 4: Imported JAN5725 tubes for vintage warm sound.

Figure 5: Tone control and bass boost features.

Figure 6: Customizable blue and orange LED tube lighting.
5. Configuració
5.1 Instal·lació del tub
Carefully insert the two JAN5725 vacuum tubes into their respective sockets on the top of the amplifier. Ensure they are firmly seated but do not force them. The tubes are fragile, so handle them with care.
5.2 Connexió de fonts d'àudio
The Douk Audio X1 offers multiple input options:
- Entrada Fono MM: Connect your turntable to the MM PHONO input using RCA cables. Ensure your turntable has an MM (Moving Magnet) cartridge. Connect the turntable's ground wire to the GND terminal on the ampmés viu.
- Entrada RCA: Connect CD players, DACs, or other audio devices with RCA outputs to the AUDIO IN (RCA) jacks.
- Entrada Bluetooth: For wireless connection, ensure the Bluetooth antenna is securely screwed into the BT port.
5.3 Connectar altaveus
Connect your passive speakers to the SPEAKER OUTPUT terminals. Ensure correct polarity (red to red, black to black). For a 2.1 stereo system, connect an active subwoofer to the SUB OUT port.
5.4 Connexió d'alimentació
Connect the provided 32V/5A power supply to the DC IN port on the rear panel of the amplifier, then plug the power supply into a wall outlet.

Figure 7: Rear panel showing MM Phono, RCA, Bluetooth, Speaker, Subwoofer, and DC inputs.

Figure 8: Input options for the ampmés viu.
6. Instruccions de funcionament
6.1 Encès/Apagat
Premeu el botó PODER botó del panell frontal per engegar el amplifier on or off. The power indicator LED will illuminate when the unit is on.
6.2 Selecció d'entrada
Utilitza el ENTRADA switch to select between Bluetooth (BT), Phono, or RCA inputs. The corresponding LED indicator will light up.
6.3 Control de volum
Ajusta el principal VOLUM knob to control the overall output level of the ampmés viu.
Control de 6.4 tons
Utilitza el BASS i AGUTS knobs to adjust the low and high frequencies of the audio output. For a flat, uncolored sound, set the TO switch to 'FLAT'. To enable tone control, set it to 'ON'.
6.5 Augment de baix
Involucrar el INTENSIFICACIÓ DELS SONS MÉS GREUS switch to enhance low-frequency response. Set to 'BOOST' for enhanced bass or 'FLAT' for normal bass.
6.6 Tube LED Light Control
Utilitza el LED switch to select the color of the tube illumination: Blue, Orange (ORG), or Off.
6.7 Vinculació Bluetooth
When the INPUT switch is set to BT, the Bluetooth indicator will flash. On your device (phone, tablet, etc.), search for "Douk Audio X1" or similar and pair. Once connected, the Bluetooth indicator will remain solid.

Figura 9: Detallada view of front panel controls.
6.8 Vídeo oficial del producte
Video 1: An official product video from Douk Audio showcasing the X1 Bluetooth Tube Phono Amp for MM Turntables. This video provides a visual overview de la amplifier i les seves característiques.
7. Manteniment
7.1 Neteja
Per netejar el amplifier, first disconnect it from the power source. Use a soft, dry, lint-free cloth to wipe down the exterior. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the finish.
7.2 Tube Replacement (Tube Rolling)
The JAN5654/JAN5725 vacuum tubes are designed to be user-replaceable, allowing for 'tube rolling' to customize the sound signature. If a tube needs replacement due to wear or for sound experimentation, ensure the amplifier is powered off and unplugged. Allow the tubes to cool completely before gently pulling them straight up from their sockets. Insert new compatible tubes (e.g., 6J1 series, 6K4, 6J4, 6AK5/6*) by aligning the pins with the socket holes and gently pushing them down until seated. Refer to the product specifications or manufacturer's recommendations for compatible tube types.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense sortida de so | Incorrect input selected; loose connections; amplifier not powered on; volume too low. | Verify input selection; check all cable connections (RCA, speaker); ensure power is on and tubes are glowing; increase volume. |
| Soroll de brunzit o brunzit | Ground loop; loose phono ground wire; interference from other electronics; faulty tubes. | Ensure turntable ground wire is securely connected; try moving amplifier away from other electronic devices; replace tubes if suspected faulty. |
| Bluetooth no connectat | Antenna not connected; amplifier not in Bluetooth mode; device too far; interference. | Ensure Bluetooth antenna is securely attached; set INPUT switch to BT; move device closer to amplifier; restart both devices. |
| So distorsionat | Volume too high; incorrect impedance speakers; faulty tubes. | Reduce volume; ensure speakers match amplifier's impedance (4-8Ω recommended); consider replacing tubes. |
9. Especificacions
- Marca: Douk Audio
- Model: SUC-X1
- Voltage: 32 volts (CC)
- Volum de subministrament màximtage: 35 volts (CC)
- Subministrament mínim Voltage: 19 volts (CC)
- Corrent de subministrament: 5 Amps
- Nombre de canals: 2
- Potència de sortida: 160W + 160W (4Ω)
- Material: Alumini
- Dimensions del paquet: 11.18 x 9.61 x 3.35 polzades
- Pes de l'article: 3.1 lliures
- Primera data disponible: 29 d'octubre de 2020
- País d'origen: Xina
10. Informació de la garantia
For detailed warranty information, please refer to the warranty card included with your product or visit the official Douk Audio weblloc web. Conserveu el rebut de compra com a comprovant de compra per a qualsevol reclamació de garantia.
11. Atenció al client
If you encounter any issues not covered in this manual or require further assistance, please contact Douk Audio customer support through their official website or the platform where you purchased the product. You can visit the Douk Audio Store at Amazon.com/stores/DoukAudioNobsound per a més informació i opcions de contacte.





