Nobsound/Douk Audio:Best Hifi Products

Nobsound NS-01E Stereo Vacuum Tube Headphone Amplifier Hi-Fi Audio Pre-Amplifier

Brand: Nobsound
Product Code: NS-01E
Availability: In Stock

❤ Minimum volume, Maximum energy. Super great  Effect!----Highly recommend :)


The Nobsound NS-01E is the smallest vacuum tube headphone amplifier in the world. Designed by Douk Audio Studio, it is a powerful and affordable Hi-Fi headphone amp featuring an anodized aluminum chassis and top mounted vacuum tube with blue illumination. This headphone amplifier will produce warmth and resonance while delivering exceptional clarity. Whether you are a Hi-Fi freshman or a Hi-Fi veteran, the NS-01E headphone amp is definitely worthy of addition to your stereo system. Experience “Tube Magic", the sublime and organic tone from the vacuum tube, which makes the sound soft, graceful, and warm.  It is almost suited for any music types.

Pair this unit up with your phono preamp, smart phone, computer, iPod, stereo system, or other audio device and your favorite headphones, and experience the high resolution, deep sound field that the NS-01E provides. The NS-01E can easily power high-performance headphones including the HD 580, HD 600, HD 650, K 701, K 702, Q 701, DT880, T70, T90, SR225, SR325, RS1e, and many more. It will also be a good match for active speaker systems.


NS-01E also can be used as Tube Pre-Amplifier, connected it with any type power amplifier, upgrade the original system musicality and dynamic.


Tips: Don’t be fooled by the size, the first time see NS-01E maybe you will think it just a toy, but you are wrong. The NS-01E not only has a super mini size, but also has an amazing Hi-Fi sound.



  • Output power: ≥1100 mW (32 ohm)

  • Adapter Headphone Impedance: 18-600 ohm

  • Total harmonic distortion: <0.005%

  • SNR: ≥110 dB

  • Frequency Response: 20 Hz – 30 kHz

  • Size: 50 * 50 * 30 mm (L * W * H; 1.97 x 1.97 x 1.18 inches) H: 65 mm with tube and feet

  • Net weight: 80g

  • Colors Available: Black, Silver, and Purple (Default black, if you want other color please mail us when buying.)

  • Input and Output Audio Jacks: 3.5 mm

Power supply: (USA/EU/UK plug optional)

  • Input voltage: AC 100-240V 50/60 Hz

  • Output voltage: DC 6V 2000mA

Package include:

  • 1× NS-01E amp

  • 1× power supply (we will send the right plug type to your country.)


Front-end (phone / lossless player / MP3 / CD / decoder / PC) → 3.5mm audio cable → NS-01E headphone amp → Headphone / power amplifier / active speaker