Inleiding
The Nobsound Douk Audio X1 is a versatile vacuum tube amplifier designed to enhance your audio experience. It features Bluetooth 5.0 connectivity, multiple input options including MM Phono, and a powerful TDA7498E amplifier IC for driving a wide range of passive speakers. The GE5752W vacuum tubes provide a warm and natural sound signature. This manual provides detailed instructions for setting up, operating, and maintaining your amplewendiger.
Pakketinhoud
- Douk Audio X1 Ampverligter Eenheid
- GE5752W Vacuum Tubes (pre-installed or to be installed)
- 32V / 5A kragadapter
- Bluetooth-antenne
- Gebruikershandleiding (hierdie dokument)
Please check all contents upon unboxing. If any items are missing or damaged, contact customer support.
Produk verbyview
Voorpaneelkontroles

Prent: Voorkant view of the Douk Audio X1 amplifier, highlighting the Power Switch, Input Switch (BT, Phono, RCA), Bass Boost Switch, Tone Switch (Off, On), Tube LED Switch (Blue, Off, Orange), Bass Knob, Main Volume Knob, and Treble Knob.
- Krag skakelaar: Draai die amplewendiger aan of af.
- Invoerskakelaar: Selects the audio input source (Bluetooth, MM Phono, RCA).
- Bass Boost Switch: Engages or disengages bass enhancement.
- Toonskakelaar: Activates or deactivates the Bass and Treble tone controls.
- Tube LED Switch: Controls the illumination color of the vacuum tubes (Blue, Off, Orange).
- Bas Knop: Adjusts the low-frequency output when Tone is 'On'.
- Hoofvolumeknop: Beheer die algehele uitsetvolume.
- Treble Knop: Adjusts the high-frequency output when Tone is 'On'.
Agterpaneelverbindings

Prent: Agter view of the Douk Audio X1 amplifier, showing the MM Phono input with ground terminal, RCA Audio In, Bluetooth antenna port, Subwoofer Output, Speaker Outputs (Left and Right), and DC Power Input.
- MM PHONO Input: Connects to a turntable with an MM cartridge. Includes a GND (ground) terminal.
- RCA/AUDIO IN: Connects to external audio sources via RCA cables (e.g., CD player, DAC, TV).
- BT (Bluetooth) Antenna Port: Connects the included Bluetooth antenna for wireless audio reception.
- SUB UIT: Connects to an active subwoofer for a 2.1 channel audio setup.
- SPREKERUITVOER: Connects to passive speakers (Left and Right channels).
- DC IN (19V-35V): Connects the provided power adapter.
Opstelling
1. Vacuum Tube Installation (if not pre-installed)
Carefully insert the GE5752W vacuum tubes into their respective sockets on the amplifier. Ensure they are seated firmly but do not force them. The tubes are fragile, handle with care.
2. Luidsprekers koppel
Koppel jou passiewe luidsprekers aan die SPREKER UITVOER terminals on the rear panel. Ensure correct polarity (+ to + and - to -) for both left and right channels. For optimal sound, use high-quality speaker cables.
Belangrike veiligheidsnota: When connecting speaker cables without banana plugs, ensure that the bare wire ends do not touch the amplifier case or each other to prevent short circuits and potential damage to the amplewendiger.
3. Verbind oudiobronne
- MM Phono-invoer: Connect your turntable's RCA output to the MM FONO input. Connect the turntable's ground wire to the GND terminaal op die ampverligter om hum te verminder.
- RCA-invoer: Connect other audio devices (e.g., CD player, DAC, TV) to the RCA/AUDIO IN ports using RCA cables.
- Bluetooth-invoer: Screw the provided Bluetooth antenna onto the BT antenna port.
4. Connecting an Active Subwoofer (Optional)
If you wish to use an active subwoofer, connect its input to the SUB UIT hawe op die amplifer se agterpaneel.
5. Kragverbinding
Connect the provided 32V / 5A power adapter to the DC IN hawe op die amplifier, then plug the adapter into a suitable wall outlet.

Prent: The Douk Audio X1 amplifier set up with a turntable and bookshelf speakers, demonstrating a typical MM Phono input connection.
Bedryfsinstruksies
1. Skakel aan/af
Druk die Kragskakelaar op die voorpaneel om die amplifier on. The vacuum tubes will light up, and the Bluetooth indicator will flash if Bluetooth is selected. Press again to turn off.
2. Invoerkeuse
Gebruik die Invoerskakelaar to select your desired audio source: BT for Bluetooth, FONO for MM turntable, or RCA for other wired devices.
3. Volumebeheer
Draai die Hoofvolumeknop to adjust the overall sound level. Start with a low volume and gradually increase it to a comfortable listening level.
4. Toonbeheer
Die amplifier features Bass and Treble controls. Flip the Toonskakelaar to 'On' to activate them. Then, use the Basknop en Treble knop to fine-tune the low and high frequencies according to your preference. Set the Tone Switch to 'Off' for a flat frequency response.
5. Bass Boost Function
Betrek die Bas Boost Switch to enhance the low-frequency output for a more impactful bass sound.
6. Bluetooth-koppeling
- Kies BT input using the Input Switch. The Bluetooth indicator will flash.
- On your smartphone, computer, or other Bluetooth device, search for available Bluetooth devices.
- Select "Douk Audio X1" (or similar name) from the list to pair.
- Once paired, the Bluetooth indicator will remain solid, and you can play audio wirelessly.
Let wel: When connecting via Bluetooth from a PC, ensure that the audio output method is correctly configured on your computer's sound settings.
7. Tube LED Control
Gebruik die Tube LED Switch to change the illumination color of the vacuum tubes to Blue, Orange, or turn the LED off.

Prent: The Douk Audio X1 amplifier receiving audio wirelessly from a smartphone via Bluetooth, with speakers connected.
Spesifikasies
| Kenmerk | Spesifikasie |
|---|---|
| Model | X1 |
| Vacuum Tube Model | GE5752W |
| Ampverligter IC | TDA7498E |
| Op-Amp | NE5532 |
| Maksimum uitsetkrag | 160W + 160W (4Ω) |
| Bluetooth weergawe | 5.0 |
| Oudio-insette | Bluetooth, Stereo RCA, MM Phono |
| Klankuitsette | 2.0 Channel Speaker Output, Active Subwoofer Output |
| Kragtoevoer | DC 32V / 5A (included) |
| Afmetings (ongeveer) | 31.8 x 28 x 8 cm |
| Gewig (ongeveer) | 1.46 kg |
| Ander funksies | Tone Control (Bass/Treble), Bass Boost, Tube LED Illumination, Short Circuit Protection |
Probleemoplossing
- Geen klank:
- Verseker die ampverligter is aangeskakel en die volume word verhoog.
- Verify that the correct input source is selected (BT, PHONO, RCA).
- Check all cable connections (power, speakers, audio sources) for secure fit and correct polarity.
- If using Bluetooth, ensure the device is paired and the PC/phone output is set to the amplewendiger.
- Verwronge klank:
- Verlaag die volumevlak van beide die amplifier and the source device.
- Kontroleer luidsprekerimpedansie-versoenbaarheid.
- Ensure vacuum tubes are properly seated.
- Humming/Noise:
- If using MM Phono, ensure the turntable's ground wire is connected to the amplifier's GND terminal.
- Kyk vir steuring van ander elektroniese toestelle.
- Maak seker dat alle kabels behoorlik afgeskerm en gekoppel is.
- Bluetooth Disconnection/Failure to Pair:
- Maak seker dat die Bluetooth-antenna stewig vas is.
- Move the source device closer to the amplewendiger.
- Forget the device on your source's Bluetooth settings and try pairing again.
- Restart both the amplifier and the source device.
Onderhoud
- Skoonmaak: Gebruik 'n sagte, droë lap om die skoon te maak amplifier's exterior. Do not use liquid cleaners or solvents.
- Vakuumbuise: The GE5752W vacuum tubes have a finite lifespan. If sound quality degrades or tubes fail to light up, they may need replacement. Contact customer support for compatible replacement tubes.
- Ventilasie: Verseker die amplifier has adequate ventilation to prevent overheating. Do not block ventilation holes.
- Berging: When not in use for extended periods, disconnect the power adapter and store the ampVerwyderaar in 'n koel, droë plek.
Veiligheidsinligting
- Moenie die blootstel nie amplifier to water, moisture, or extreme temperatures.
- Moenie die oopmaak nie ampverligter casing. There are no user-serviceable parts inside, and doing so voids the warranty and poses a risk of electric shock.
- Use only the provided power adapter or a compatible replacement specified by the manufacturer.
- Hou die amplifier away from children and pets.
- Ontkoppel die krag tydens weerligstorms of wanneer dit vir lang tye nie gebruik word nie.
Waarborg en Ondersteuning
Nobsound products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official Nobsound website. Please have your model number (X1) and purchase details ready when contacting support.