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Nobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp
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- This is Douk Audio's own brand, Nobsound. Nobsound features a low price coupled with high performance in a small, simple package delivering high fidelity, specially designed to provide the audiophile with the performance they deserve. Now we want to introduce you our newest preamp B07719G56B, which suits very well for this amp.
- This unit can easily power high-performance headphones including the HD 580, HD 600, HD 650, K 701, K 702, Q 701, and many more. 24~600Ω headphones would be recommended and armature earphones are not suitable.
- Package includes: headphone amplifier, 6J9 vacuum tubes (x2), and power supply.
- Input and output audio jacks are both 3.5 mm. Please note, package does not include audio cables.
- Replacement vacuum tubes include: E180F, 6ж9П, EF861, and 6688.
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Please turn on the amplifier for about 15 seconds before you connect the audio source and put on the headset.
We recommend using 24~600Ω headphones, while armature earphones and headphones that have low resistance and high sensitivity are not suitable.
As there will be vavle Microphone effect, please keep the amplifier steady while using it.
For noise issue, please keep it away from devices like routers, mobile phones or something that may interfere in the audio signal.
If there are no interference, please remove all input and listen to see if the noise still exists. If so, the device may be defective and you can contact us to get support.
Output power: ≥1100 mW (32 ohm)
Headphone Adapter Impedance: 18-600 ohm
Total harmonic distortion: <0.005%
SNR: ≥110 dB
Frequency Response: 20 Hz - 30 kHz
Size: 111 * 69 * 32 mm / 4.37 * 2.72 * 1.26 in (Height: 73 mm with vacuum tube installed)
Net Weight: 185 g / 0.41 lb
Power supply: Input voltage: AC 100-240V 50/60 Hz; Output voltage: DC 6V 2000mA
Top customer reviews
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I am a professional sound recordist in the film industry. I listen to incredibly high quality microphones and preamps day in and day out for 10-12 hours a day on average. Basically, I listen for a living. I say this so that when I say this product is awesome for the money, I really mean it.
Headphones all have a certain level of impedance. This is the measurement of how hard it is for the electrical current to get the drivers moving to produce sound. Most headphones are horribly underpowered. As one example (and the reason I purchased this headphone amplifier) I have a set of BOSE noise cancelling headphones for apartment use (non-studio, non-audiophile) use. They work great because they block out unwanted background noise and sometimes that ability overrules all other requirements. However, my MacBook Pro could barely power them, and many times I simply could not get them to be loud enough for certain music passages. The sound was also 'loose' and 'thin'.
Now, I have not only much more power (too much now - I could not possibly turn this amp up all the way without hurting my ears), but I have much more focused bass response, and I'm hearing all sorts of stuff in music through these headphones I have never heard before. Dare I say these headphones are rather incredible now.
For $50 you cannot go wrong. Now, mind you one immediate issue I notices was a cheap input / output jack set but a little wiggling and the plugs went in okay. Also, this unit is horribly susceptible to cell phone RFI (radio frequency interference), so when it buzzes on my desk I can hear it in the electronics. This is the reason this unit is $50, not $500. If you want a properly made RFI shielded unit made in the USA then you have to shell out cash. If you don't mind setting your cell to Airplane mode or moving it 3-5 feet away from the unit and you still want a killer little amp then this is a great unit.
I have a new set of BeyerDynamic DT-770 Pros on the way in the mail (250ohm version). If this amp drives them well, I may not even bother upgrading to the more expensive headphone amp I had on my holiday wishlist. We shall see.
This is the best purchase of the year!
It's a simple little tube pre-amp, but wow this thing opens up the soundstage and warms it up with a good headset.
It's just plain fun. I didn't tube roll it or modify it , because it sounds great as is.... considering the price.
Most recent customer reviews
FYI, I swapped out the Chinese tubes for Mullard E180F.
This made a noticeable improvement.Read more