Douk Audio NS-02E

Douk Audio Nobsound NS-02E Vacuum Tube Headphone AmpManwal ta 'l-Utent aktar ħaj

1. Introduzzjoni

The Douk Audio Nobsound NS-02E is a compact and versatile vacuum tube headphone amplifier designed to enhance your audio experience. It features an anodized aluminum chassis and a replaceable vacuum tube with blue illumination. This amplifier delivers a soft and warm sound while maintaining exceptional clarity, making it suitable for various audio setups.

The NS-02E can function as a dedicated headphone amplifier or as a tube pre-amplifier, allowing integration with existing power amplifiers to improve musicality and dynamic range. Its design supports easy tube replacement, offering flexibility for sound customization.

2. Kontenut tal-Pakkett

Jekk jogħġbok iċċekkja l-pakkett għall-oġġetti li ġejjin:

  • 1 × Nobsound NS-02E Headphone Ampaktar ħaj
  • 1 × Power Supply Adapter
  • 1 × 6N3 Vacuum Tube (pre-installed or separate)
  • 1 × Audio Cable (3.5mm to 3.5mm)

3. Prodott Aktarview

The NS-02E features a robust anodized aluminum chassis, providing durability and a sleek aesthetic. The visible vacuum tube is illuminated with a blue light when powered on, adding to its unique appeal. The front panel includes a volume control knob and 3.5mm input/output jacks, while the rear panel houses the power input.

Douk Audio Nobsound NS-02E Headphone Amplifier with anodized aluminum chassis and illuminated vacuum tube.

Immaġni: Quddiem view of the Nobsound NS-02E Headphone Amplifier, highlighting its anodized aluminum chassis and the illuminated vacuum tube.

Douk Audio Nobsound NS-02E Headphone Amplifier with dimensions showing its compact size.

Image: The Nobsound NS-02E amplifier shown with its compact dimensions (90x90x39mm), illustrating its small footprint.

4. Istruzzjonijiet ta' Setup

Segwi dawn il-passi biex twaqqaf in-Nobsound NS-02E tiegħek ampaktar ħaj:

  1. Tube Installation (if not pre-installed): Gently insert the 6N3 vacuum tube into the socket on top of the amplifier. Ensure the pins align correctly with the socket holes and push down firmly but carefully until it is seated.
  2. Qabbad l-Input tal-Awdjo: Use the provided 3.5mm audio cable to connect your audio source (e.g., smartphone, computer, iPod, stereo system) to the 'Ġewwa' jack on the front panel of the NS-02E.
  3. Qabbad il-headphones: Ipplaggja l-headphones tiegħek fil- 'Barra' jack on the front panel of the NS-02E. The amplifier supports headphones with impedance ranging from 18 to 600 ohms.
  4. Qabbad l-Enerġija: Connect the power supply adapter to the DC 6V input jack on the rear panel of the amplifier. Then, plug the power adapter into a suitable wall outlet.
  5. Issettjar tal-Volum Inizjali: Before powering on, turn the volume knob counter-clockwise to its minimum setting to prevent sudden loud sounds.
Douk Audio Nobsound NS-02E Headphone Amplifier connection diagram showing input from devices and output to headphones or speakers.

Image: Connection diagram illustrating how to connect various audio sources (iPod, smartphone, computer) to the 'In' port and headphones or active speakers to the 'Out' port of the NS-02E.

Using as a Pre-Ampaktar ħaj:

To use the NS-02E as a pre-amplifier, connect your audio source to the 'In' jack as described above. Then, connect the 'Out' jack of the NS-02E to the input of your power amplifier or active speaker system. This configuration allows the NS-02E to process the audio signal before it reaches your main ampsistema ta ’lifikazzjoni.

5. Istruzzjonijiet Operattivi

  1. Qawwa Mixgħul: After all connections are made, press the power button (if available, otherwise it powers on when connected to power). The vacuum tube will illuminate with a blue light, indicating the unit is powered on.
  2. Aġġusta Volum: Slowly turn the volume knob clockwise to increase the sound level to your desired listening volume.
  3. Igawdu: Begin playing audio from your connected source.
  4. Itfi: Biex itfi l- amplifier, disconnect the power supply from the wall outlet or press the power button if present.

6. Manutenzjoni

Sostituzzjoni tat-Tubu

The default 6N3 vacuum tube can be replaced with various compatible tubes to customize the sound signature. To replace the tube:

  1. Mitfi u Skonnettja: Tiżgura l- amplifier is powered off and disconnected from the power supply. Allow the tube to cool down completely before handling.
  2. Remove Old Tube: Gently grasp the existing tube and pull it straight up from its socket. Avoid twisting or bending the pins.
  3. Daħħal Tubu Ġdid: Carefully align the pins of the new tube with the holes in the socket. Gently push the tube straight down until it is fully seated. Do not force it.

Compatible Tube Types:

  • L-Istati Uniti: 6A8Q, 2C51, 5670, 5185, 6385, 6185, WE396
  • Ewropa: ECC 42
  • Soviet Union: 6H3N, 6H3II
  • Il-Ġermanja: ECF82
  • Ir-Repubblika Ċeka: 6CC42
Douk Audio Nobsound NS-02E Headphone Amplifier with a separate vacuum tube, illustrating tube replacement options.

Image: The Nobsound NS-02E amplifier with a separate vacuum tube, demonstrating the user's ability to replace the default tube with other compatible models for sound customization.

Kura Ġenerali

  • Żomm il- amplifier in a clean, dry environment, away from direct sunlight, heat sources, and moisture.
  • Clean the chassis with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
  • Evita li tpoġġi oġġetti tqal fuq il- ampaktar ħaj.

7 Issolvi l-problemi

If you encounter issues with your NS-02E amplifer, irreferi għall-problemi u s-soluzzjonijiet komuni li ġejjin:

ProblemaKawża PossibbliSoluzzjoni
L-ebda ħoss
  • Il-qawwa mhux imqabbda jew mixgħula.
  • Input/output cables incorrectly connected.
  • Il-buttuna tal-volum hija ssettjata baxx wisq.
  • Faulty audio source or headphones.
  • Ensure power adapter is securely connected and plugged in.
  • Verify all 3.5mm cables are fully inserted into the correct 'In' and 'Out' jacks.
  • Żid il-volum gradwalment.
  • Test with a different audio source or headphones.
Distorted or static sound
  • Konnessjonijiet tal-kejbil maħlula.
  • Interferenza minn apparati elettroniċi oħra.
  • Faulty vacuum tube.
  • Input signal too strong (clipping).
  • Iċċekkja l-konnessjonijiet kollha tal-kejbil għal sigurtà.
  • Mexxi l- ampl-illuminatur 'il bogħod minn apparat elettroniku ieħor.
  • Try replacing the vacuum tube with a known good one.
  • Reduce the volume output from your audio source.
Ħsejjes ta’ daqq jew żanżin
  • Kwistjoni tal-linja tal-art.
  • Interference from power supply or nearby devices.
  • Ipprova ipplaggja amplifier into a different power outlet.
  • Ensure all audio cables are properly shielded.
  • Mexxi l- amplifier away from power cables or transformers.
Blue tube illumination not working
  • L-unità mhix mixgħula.
  • LED failure (rare).
  • Ikkonferma l- ampL-ilifikatur qed jirċievi l-enerġija.
  • If the unit functions otherwise, the illumination is cosmetic and does not affect performance.

8. Speċifikazzjonijiet

KaratteristikaSpeċifikazzjoni
MudellNobsound NS-02E
Tip ta' Tubu6N3 (default), replaceable
Qawwa tal-Ħruġ≥1100 mW (32 ohm)
Adapter Headphone Impedance18-600 ohm
Distorsjoni Armonika Totali (THD)<0.005%
Proporzjon Sinjal-Ħsejjes (SNR)≥110 dB
Rispons ta' Frekwenza20 Hz – 30 kHz
Dimensjonijiet (L×W×H)90 × 90 × 39 mm (3.54 × 3.54 × 1.54 pulzieri)
Height with Tube and Feet80 mm
Piż Nett165g (0.36 lbs)
Input/Output Audio Jacks3.5 mm
Materjal tax-xażiAluminju

9. Garanzija u Appoġġ

For warranty information and technical support, please refer to the documentation provided with your purchase or contact Douk Audio customer service directly. Contact details can typically be found on the manufacturer's official websit jew permezz tal-bejjiegħ bl-imnut tiegħek.

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