700 reviews analysed
Rank
Product Name
Score
1. Nobsound NS-10P Mini Vacuum Tube Preamp Audio Hi-Fi Stereo Pre-Amplifier Treble & Bass Control
Feature
- Notice: ① Preamplifier needs to work with amplifiers or active devices
- ② Not PHONO preamp and can’t be used for record players
- Excellent sound performance
- No background noise
- Warm and soft tube sound
- Sound quality enhancement
- Pure tube preamplifier
- Suitable for all amplifiers and music types
- With independent treble, bass and volume control
- Vacuum tubes can be replaced by various models
- Mini size and exquisite appearance
- CNC aluminum shell and front panel
- Blue tube light
- Mellow and solid touch feeling
2. Nobsound HiFi 6J1 Vacuum Tube Preamplifier Stereo PreAmp Digital Treble&Bass Tone Control (Silver)
Feature
- Notice: ① Preamplifier needs to work with amplifiers or active devices; ② Not PHONO preamp and can’t be used for record players
- Audio signal input end can connect to the computer, CD, phone and other player for lossless audio
- The output end can connect to the digital amplifiers, active multimedia audio devices.
- With treble and bass adjustment function; No background noise
- Gold-plated for input and output terminals; 6J2 valve tube; Black version ASIN: B01NBM7K8L
Description
Troubleshooting:
- Please note that this product is a preamplifier. It is not an amplifier and needs to be connected with an amplifier or active audio devices. Also, it is not a phono preamp and can’t work with a turntable.
- For noise issue:
- There is a large probability that the low-quality audio cable causes the static noise.
- Please make sure the sound source is fine since tube amplifiers will amplify all sound including the noise.
- Please check whether the tubes are plugged well on the tube sockets or not.
- Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
- If your problem can’t be solved, please feel free to contact us. We will be very glad to help you and try our best to make you satisfied.
Specifications:
- Audio input: RCA input * 1 group
- Audio output: RCA output * 1 group
- Power DC input: 12V input
- Aluminum shell, CNC processing
- Laser carving characters
- Color: Black / Silver
- Size (W*H*D): 100*70*150 mm / 3.94*2.76*5.91 in
- Weight: 0.5 Kg / 1.1 lb
Package Includes:
- 1 * Digital Audio Preamp
- 1 * 12V Power Supply
3. P1 Bluetooth 5.0 Vacuum Tube Preamplifier Hi-Fi Valve Headphone Amplifier Wireless Receiver Audio Decoder Preamp USB DAC APTX
Feature
- P1 is a Bluetooth vacuum & valve tube preamplifier and headphone amplifier. Headphone output is 160mW @32Ω and is suitable for 32~300Ω headphones and headsets.
- Classic 6J5 vacuum & valve tube can provide warm retro tube sound. It can be replaced by US RCA / 6AH6, Russian 6C2C and so on.
- It supports Bluetooth/USB/RCA inputs from various devices like iPod, Phone, MP3, TV, Blu-ray players, Echo Dot, CD players, computer etc.
- Bluetooth 5.0 supports APT-X, APT-X LL lossless transmission. PC-USB supports 24bit 192KHz and is compatible with Windows/Mac/Linux system
- Treble & bass control can achieve different sound style. Bypass function can suspend the tone control circuit to achieve purer music experience.
4. Nobsound 12AX7 12AU7 Vacuum Tube Preamp HiFi Preamplifier Shigeru WADA Japan Circuit (Assembled)
Feature
- Shigeru Wada Japan circuit improved circuit
- Vacuum Tube: Shuguang 12AX7 * 2 / 12AU7 * 2 / 6Z4 * 2
- Excellent scaffolding design, reasonable, regular, symmetrical device layout, strictly respect the grounding line
- Power Transformers 76 * 40 H250 0.35 sheets
- Japan ALPS 16 A-type audio potentiometer
- Full aluminum chassis with wood side panel
- 4 Set of stereo L/R RCA auido input, 1 set of RCA output
5. Nobsound Bluetooth HiFi 6J2 Vacuum Tube Preamplifier Stereo PreAmp Digital Treble & Bass Tone Control (Black)
Feature
- Notice: ① Preamplifier needs to work with amplifiers or active devices; ② Not PHONO preamp and can’t be used for record players
- Vacuum tube preamp with Bluetooth; Convenient to improve your sound quality
- Audio signal input can be computer, CD, phone and lossless player; Three kinds of audio input: RCA; 3.5mm stereo input; Bluetooth
- Easily switching between different sound sources with its audio input selection
- Treble & bass adjustment; Sound is warm and broad; No background noise; Gold-plated for input and output terminals; 6J2 valve tube; Mini size suitable for desktop
Description
Color:Black
Bluetooth Connection:
Some customers may find the Bluetooth can’t be connected or found. Here is the solution.
1. Power off the M8 and your phone.
2. Wait for 5s and then power on both.
3. If it still can’t be discovered, repeat 1 and 2 and it should work.
If the problem can’t be solved, please visit https://www.amazon.com/sp?seller=ADPE7GPX91ORE and click “ask a question” to contact us.
Troubleshooting:
- Please note that this product is a preamplifier. It is not an amplifier and needs to be connected with an amplifier or active audio devices. Also, it is not a phono preamp and can’t work with a turntable. For noise issue:
- There is a large probability that the low-quality audio cable causes the static noise.
- Please make sure the sound source is fine since tube amplifiers will amplify all sound including the noise.
- Please check whether the tubes are plugged well on the tube sockets or not.
- Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
- If your problem can’t be solved, please feel free to contact us. We will be very glad to help you and try our best to make you satisfied.
Specifications:
- Audio input: 1 set of RCA input; 1 * 3.5mm stereo input; 1 * Bluetooth input
- Audio output: 1 set of RCA output
- Dimensions: 16*11.5*7 cm (including tube height)
- Power supply: universal 12V DC
Packing List:
- 1 * PreAmp
- 1 * Power supply
- 3 * 6J2 tube (one spare tube)
- 1 * Bluetooth antenna
6. Nobsound Mini Fully-Balanced/Single-Ended Passive Preamp; Hi-Fi Pre-Amplifier; XLR/RCA Volume Controller for Active Monitor Speakers (Black)
Feature
- This product uses the expensive ALPS 27 quadruple fully-balanced potentiometer, NEUTRIK XLR, Pro-Singnal RCA. Nobsound never be stingy in the components and materials of our products.
- This prodcut has a small size, while is still euipped with commonly-used interfaces. There is a selection switch which you can choose the fully-balanced or single-ended audio signal mode, as well as the output or input mode.
- This prodcut has no amplifying circuit and won’t change the timbre. You can enjoy the most original sound of your active monitor speakers.
- Its clean black appearance suits for almost every usage scenarios.
- PLEASE NOTE: This is a PASSIVE PREAMPLIFIER. It has NO amplifying circuit.
7. Nobsound NS-08E Vacuum Tube Headphone Amplifier Hi-Fi Valve Headphone Amp Stereo Audio Preamplifier
Feature
- NS-08E is a Hi-Fi tube headphone amp. It can offer >
- =1100mW at 32Ω and can drive 18~600 ohm headphones & headsets.
- New version adopts 6J3 vacuum & valve tube, which has warmer tube sound and more replaceable tubes.
- Upgrade circuit can ensure lower background noise, more powerful bass and more brilliant treble.
- It can also be used as a stereo preamplifier for other amplifiers and active speakers. For better preamp function, we recommend NS-10P (ASIN: B07719G56B).
- CNC Aluminum shell with super mini size. Very solid workmanship. Prompt and courteous customer service.18-month warranty and life technical support. For any questions, please contact us on Amazon.
8. Nobsound Mini Bluetooth Power Amplifier; Stereo Hi-Fi Digital Amp 2.0 Channel 50W×2 with AUX/USB/Bluetooth Input; Wireless Audio Receiver; PC Sound Card with Power Supply (Black)
Feature
- This is Nobsound’s new power amplifier in 2017. Based on our previous product, we enhance its output power and improve its functionality, while still keep its mini size and elegant design. Now there is an upgraded version NS-10G Pro, if you want purer Hi-Fi experience, please search ASIN: B07GB2ZFRR to try it.
- Despite its mini size(can be hold with one hand), the output power is improved to 100W(50W*2) with the upgraded chip. You will be amazed by its output power compared to its size when you see it.
- Supporting AUX/USB/Bluetooth input. You can enjoy your music in different ways. The Bluetooth function is also upgraded. Now it is more stable and faster.
- We need to mention that with the USB input, music can be played losslessly(Like connecting with a computer. By the way, you don’t need to install a driver). You will be surprised by the sound quality.
- 30 days returning service and 3 months replacement service. 1 year warranty and life technical support. For any questions, please email us at [email protected]
9. Nobsound 6P1 6.8W x 2 Vacuum Tube Power Amplifier; Stereo Class A Single-Ended Audio Amp Handcrafted
Feature
- This Class A single-ended vacuum tube amplifier adopts hand welding to ensure the true reality of the sound quality (with headphone amp function ASIN: B076CC92BX).
- This amplifier adopts transformer parallel output to reduce its internal resistance by half and achieve doubled improvement on its power.
- Using antimagnetic transformer covers to shield current interference and achieve much lower static noise.
- Its sound output is full of analog style. The bass part is deep and powerful and the vocal part is sweet and intoxicating.
- It has a classic and graceful appearance. The VU meters and vacuum tubes makes it more elegant and attractive.
10. Nobsound Little Bear FU32(832A) Vacuum Tube Headphone Amplifier ; Mini HiFi Stereo Preamp
Feature
- Not only as a headphone amplifier, compatible with wide impedance range(12-200Ω), but also as a preamp for your other power amplifier, convenient and efficient to improve sound quality.
- 1*3.5 mm stereo jack input, can be connected to computer, CD, mobile phone and lossless player. 2*3.5 mm output can also be connected to digital amplifiers and active multimedia audio devices.
- Default Beijing FU32 vacuum tube, can be upgraded to GU-32/832
- Default NE5532 op amp, can be upgraded to OPA2604, JRC4558, OPA2132, OP275 and so on for enjoying different tones.
- Mini size with attractive appearance, compact design makes it suitable for desktop audio system.
- Prompt and courteous customer service.1 year warranty and life technical support.
Description
Notice:
Input signal overload may cause distortion and noise. When this happens, please turn down the volume of the audio source until no noise and then adjust proper volume through the amp itself.
Parameters:
Audio input: 1*3.5mm Jack
Audio output: 2*3.5mm headphone jack(one for 12-40Ω headphone and one for 40-200Ω headphone)
Power supply: DC 12V@2A(5.5/2.2mm)
Tube model: Beijing FU32
Op amp: NE5532
Color: black
Dimensions: (L)86 mm *(W)86 mm *(H)43 mm(Excluding the tube)
Net weight: 320g
Packing List:
1*Headphone Amplifier
1*Power Supply
1*FU32 Tube
Noise may be resulted from:
1. Low-quality audio cables, poor audio source can cause the static noise.
2. The tubes not are plugged well on the tube sockets or the two red wires are not inserted to FU32 tube.
3. Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
Conclusion
By our suggestions above, we hope that you can found Nobsound Ns10p Mini Vacuum Tube Preamp for you.Please don’t forget to share your experience by comment in this post. Thank you!
