1. הקדמה
The Nobsound NS-08E is a versatile Hi-Fi tube headphone amplifier designed to enhance your audio experience. It can deliver over 1100mW at 32Ω, making it suitable for driving headphones and headsets with impedances ranging from 18 to 600 ohms. This unit also functions as a stereo preamplifier for other amplifiers and active speakers. The new version features 6J3 vacuum tubes, offering a warm tube sound and the flexibility of replaceable tubes for sound customization. Its circuit design aims for low background noise, powerful bass, and brilliant treble.

Figure 1: Nobsound NS-08E Vacuum Tube Headphone Ampליפער
2. סעטאַפּ אינסטרוקציעס
Follow these steps to set up your Nobsound NS-08E ampלייבער:
- ופשליסן די Ampלייבער: קערפאַלי באַזייַטיקן אַלע קאַמפּאָונאַנץ פון די פּאַקקאַגינג.
- רער אינסטאַלאַציע: די amplifier comes with 6J3 vacuum tubes. Carefully insert them into their sockets. The amplifier supports direct replacement with various tube models, including 6J1, 6Ж1П, 6AK5, 6BC5, 403A/B, 5654, EF40, EF95, CV850, 6J2, 6Ж2П, 6AS6, CV2522, EF11/732, CV4011, 6J3, 6Ж3П, EF96, CV848, 6BC6, 6AG5, 6J4, 6J36, 6BX6, 6AC7, EF94, 6AU6, 6J5, 6Ж5П, EF80, CV2521, EF36, 6AH6, 6AN5, 6K4, 6K5, 6K4П, 6BA6, 6DA6, EF89/93, 5749. The video below demonstrates the tube replacement process.
- מאַכט קשר: Connect the provided power supply to the DC 6V input on the rear of the amplifier. Plug the power supply into an AC 100-240V 50/60 Hz outlet.
- אַודיאָ מקור קשר: Connect your audio source (e.g., phone, tablet, CD player, laptop, computer) to the 3.5mm AUX IN jack on the front panel.
- Headphone/Output Connection: Connect your headphones or other audio output devices (e.g., amplifier, active speakers) to the 3.5mm AUX OUT jack on the front panel.
- ווארימ-אפ צייט: לאָזן די amplifier to warm up for approximately 15 seconds after powering on before connecting your audio source and headset for optimal performance.
- כעדפאָונז קאַמפּאַטאַבילאַטי: דאס amplifier is designed for headphones with an impedance of 24-600Ω. Armature earphones and headphones with very low resistance and high sensitivity may not be suitable.
- אָפּטיאָנאַל פּרעampבאַניץ פון ליפיער: For enhanced preamplifier functionality, consider using the NS-10P (ASIN: B07719G56B) as a dedicated stereo preamplifier for other amplifiers and active speakers.
Video 1: Demonstrating the Nobsound NS-08E Vacuum Tube Headphone Amplifier, including tube replacement and connection points. This video shows the compact size and the ease of swapping vacuum tubes.

Figure 2: Front Panel Connections and Compatible Devices
3. אַפּערייטינג ינסטרוקטיאָנס
אַמאָל די amplifier is set up, follow these guidelines for operation:
- מאַכט אויף / אַוועק: Use the red power button located on the rear panel to turn the ampליפער אויף אָדער אַוועק.
- באַנד קאָנטראָל: Adjust the volume using the gold knob on the front panel. Rotate clockwise to increase volume and counter-clockwise to decrease.
- Tube Rolling: The NS-08E features a replaceable tube design, allowing you to experiment with different compatible vacuum tubes (as listed in the Setup Instructions section) to customize the sound profile.
- אָרט: האַלטן די amplifier steady during use to prevent microphonic effects from the tubes. Ensure it is positioned away from devices that may cause interference, such as routers or mobile phones.

פיגורע 3: Amplifier in Use with Smartphone and Headphones
4. וישאַלט
געהעריקע אויפהאלטונג זיכערט די לאנגעוויטי און אפטימאלע פאָרשטעלונג פון אייער ampלייבער:
- רייניקונג: ניצן אַ ווייך, טרוקן שטאָף צו ריין די יקסטיריער פון די amplifier. Avoid using liquid cleaners or abrasive materials.
- רער פאַרבייַט: Over time, vacuum tubes may degrade. Replace them with compatible tubes as needed to maintain sound quality. Refer to the list of replaceable tubes in the Setup Instructions section.
- היץ מאַנאַגעמענט: די amplifier's CNC aluminum shell is designed for heat dissipation. It is normal for the unit to become warm during extended use. For prolonged operation, avoid direct skin contact with the amplifier's surface, especially the tubes, as they can become very hot. Ensure adequate ventilation around the ampליפער.
- סטאָרידזש: When not in use for extended periods, disconnect the power supply and store the amplifier in a cool, dry place.
5. טראָובלעשאָאָטינג
If you encounter issues with your Nobsound NS-08E, refer to the following common problems and solutions:
- קיין קול:
- Ensure the power supply is securely connected and the ampליפיער איז פּאַוערד אויף.
- Verify that the audio source is playing and connected correctly to the 3.5mm AUX IN.
- Check headphone connections to the 3.5mm AUX OUT.
- Increase the volume using the front panel knob.
- Static or Buzzing Noise:
- פאַרזיכערן די amplifier is kept away from potential interference sources like routers, mobile phones, or other electronic devices.
- If noise persists, disconnect all audio inputs and check if the noise is still present. This can help determine if the noise originates from the amplifier or the audio source.
- Ensure tubes are properly seated.
- פאַרקרימט סאָונד:
- רעדוצירן די באַנד מדרגה.
- Check if your headphones' impedance is within the recommended 18-600 ohm range.
- Consider replacing the vacuum tubes if they are old or damaged.
- Intermittent Sound or Channel Imbalance:
- קאָנטראָלירט אַלע קאַבל פֿאַרבינדונגען פֿאַר לויזקייט אָדער שעדיקן.
- Ensure the vacuum tubes are fully and correctly inserted into their sockets.
6. ספּעסאַפאַקיישאַנז
| סאָרט | נאָבסאָונד |
| מאָדעל נאָמען | NS-08E |
| מאַכט מקור | עלעקטריש מיט שנור (DC 6V) |
| פּראָדוקט דימענשאַנז | 4.37 X 1.26 X 0.04 אינטשעס |
| פּונקט וואָג | 14.08 אונסעס |
| מאַטעריאַל | אַלומינום |
| קאָליר | שוואַרץ און קופּער |
| כעדפאָון ימפּידאַנס | 18 ~ 600 אָום |
| רעזולטאַט מאַכט | >=1100mW (32Ω) |
| רער מאָדעל | 6J3 (replaceable) |

פיגור 4: פּראָדוקט דימענסיעס און וואָג
7. וואָראַנטי און שטיצן
Nobsound is committed to providing quality products and customer satisfaction.
- קונה סערוויס: For any questions, concerns, or support needs regarding your NS-08E amplifier, please contact Nobsound customer service through Amazon.
- פּראָדוקט אינפֿאָרמאַציע: For additional product information and other Nobsound offerings, visit the official Nobsound Store on Amazon: Nobsound Store.





