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Douk Audio is committed to provide the most cost-effective products and the highest level of service.

We have been providing audio products for hundreds of countries with thousands of kinds.

We own several brands including "Douk Audio", "Nobsound", "Little Bear" etc.

Our Aim is to "Make Everyone Enjoy the Fun of Hi-Fi".

Nobsound Magic Eye 6E2 EM87 Tube Preamp; Audio Level Indicator; VU Meter; Music Spectrum

Introduction:

6E2 tube magic eye driver board adopts Douk Audio core power technology, more convenient and simple to use, effectively reduces the power consumption of the circuit, and the PCB uses a large number of SMT components.

Features:

  1. Adopting universal DC power supply mode DC (5V-7V), and can also be directly powered by standard USB 5V, such as mobile phone charger or computer USB interface. Can be regardes as the lowest power consumption among the same kinds of products.
  2. Reasonable optimization of PCB size, reduce the chassis space occupied, the wiring is simple and clear.
  3. The potentiometer is provided with a level display range adjustment, more convenient to adjust it.
  4. Built-in secondary signal amplification, higher sensitivity, and adjustable level display.
  5. Built-in electronic boost circuit, not use the 250V transformer required for traditional driver board, saving more money and space.

How to use it:

There is an audio signal cable in the package.

You can solder it to your audio devices.

There are 4 videos on youtube from an audio fan.

You can search kKJhjDRMIz8 ; ncIPR7wjcYI ; 7BVKXC0BO2Y ; ASMysDxXn9E on youtube.

If you don't want to solder it, you can just wiring its signal cable to your speaker / amplifier's terminals.

Notice & Parameters:

Packing List:
  • 1* driver board with case
  • 1* 6E2 tube
  • 1* USB to DC power cord
  • 1* Signal cable

  1. The finished board has been burn-in tested and can be used directly when you receive it.
  2. Dangerous voltages may be generated when the circuit is working. Please pay attention to safety.

  • Operating voltage: DC 5-7V or USB 5V
  • Power consumption: ≤3.15W (DC7V) / ≤2.25W (DC5V)
  • Net weight: 60 g / 0.13 lb
  • Dimensions: 80*47*22 mm / 3.15*1.85*0.87 in

Features & details

Features

  • Functions: Magic Eye can be used as an audio level indicator or a VU meter. You can see the tube light dancing with your audio signal. You can use it seperately or combine it with your devices, which is very useful and beautiful.
  • Advantages: ① The circuit of Magic Eye has been redesigned overall. Compared with similar products, it has much less heating, very lower power consumption and smaller size.
  • ② It adopts SMT technology, which decrease the height of all circuit components. Optimized layout makes its wiring is more simple. ③ It has bulit-in secondary signal amplification with higher sensitivity. Its amplitude can also be adjusted on the board.
  • ④ It has bulit-in voltage boost circuit and can be driven by DC 5V~7V (USB 5V is also supported). Unlick other similar porducts needs 250V transformer. Please do not touch the board while working.
  • There is an audio signal cable in the package. You can solder it to your audio devices. If you don''t want to solder it, you can just wiring its signal cable to your speaker / amplifier''s terminals.

Product information

Product Warranty: For warranty information about this product, please click here
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Customer Questions

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Q: I bought two of these for stereo effect. They are great, but would like to use only one po…

A: Hello. If you know DIY, you can split one power cord to two. The easiest way is to buy a d…

Seller DoukAudio | 2 years ago

Q: Can this be driven by speaker level outputs?

A: Yes that is what it is made to be driven by.

Amazon Customer | 8 months ago

Q: Is it 10Kohm input impedance like "line out" or 4-8-16ohm input impedance like "speaker ou…

A: The above answer is incorrect. I have two sets of these. The jack on the unit is for pow…

Amazon Customer | 8 months ago

Q: What signal level (in volts) will the eye "close" at? (tube fully illuminated) The green b…

A: The eye will not totally close on this board. The specs on the American version of the tub…

DA | 8 months ago

Customer reviews

4.4 out of 54.4 out of 5
44 global ratings

Top reviews from the United States

Christopher Anderson
5.0 out of 5 starsVerified Purchase
Very cool addition to my valve amp.
Reviewed in the United States on August 6, 2019
These are really neat, if just a novelty for me. Wanted to add some retro pizzas to my Yaqin MC13 valve amp. These did the trick! Yes the audio cabling is a bit thin gage (and one of the wires in the two I purchased immediately... See more
These are really neat, if just a novelty for me. Wanted to add some retro pizzas to my Yaqin MC13 valve amp. These did the trick! Yes the audio cabling is a bit thin gage (and one of the wires in the two I purchased immediately came undone from the plug-easy fix) but they are quite beautiful. Recall no USB power pucks are included, but who doesn''t have a box of them laying about? Something for fun...
14 people found this helpful
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Amazon Customer
5.0 out of 5 starsVerified Purchase
no awful L.E.D. lights:) perfect for what it is.
Reviewed in the United States on January 13, 2019
THANK YOU FOR NOT PUTTING A BLUE L.E.D. ON IT!!!!! OR ANY LEDS FOR THAT MATTER!!!:) it reacts well, seems to be calibrated from the factory well. is attractively put together. 5v dc is nice my tube was a little dirty upon arrival but cleaned up... See more
THANK YOU FOR NOT PUTTING A BLUE L.E.D. ON IT!!!!! OR ANY LEDS FOR THAT MATTER!!!:)
it reacts well, seems to be calibrated from the factory well.
is attractively put together.
5v dc is nice
my tube was a little dirty upon arrival but cleaned up fine.
i do wish it had "feet" instead of just screws on the bottom. but its not a problem.

I had to buy two....
The fact that two random units operate EXACTLY the same as one another is AMAZIN. They even warm up at the exact same rate.
7 people found this helpful
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T.
5.0 out of 5 starsVerified Purchase
Vintage cool
Reviewed in the United States on February 24, 2021
A great addition to my audio. Combined with VU meters made a great project! Neat visual effect!
3 people found this helpful
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Amazon Customer
3.0 out of 5 starsVerified Purchase
Almost a nifty toy
Reviewed in the United States on November 10, 2020
Brightness far too high to use in a dark listening room / theater. Had to spray coat tubes with automotive tail light tint spray to make it bearable. Amplitude control for tube response sensitivity is nearly useless, you can turn and turn and turn and no change...suddenly... See more
Brightness far too high to use in a dark listening room / theater. Had to spray coat tubes with automotive tail light tint spray to make it bearable. Amplitude control for tube response sensitivity is nearly useless, you can turn and turn and turn and no change...suddenly you''ll discover you''ve been turning it the wrong direction for what you needed to accomplish. Once those little tweaks are made, these are pretty nifty and are good conversation starters for those watching them in action.
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Burgerman
5.0 out of 5 starsVerified Purchase
Plug and Play, Works Great!
Reviewed in the United States on May 19, 2019
Works better than expected. Have two hooked up (right and left channel) to my 1970''s Pioneer SX1250 receiver. Hooked them up to the speaker outputs. Very easy. Adds a cool vintage, retro look to my set up. Found some good little power adapters for them on Amazon... See more
Works better than expected. Have two hooked up (right and left channel) to my 1970''s Pioneer SX1250 receiver.
Hooked them up to the speaker outputs. Very easy. Adds a cool vintage, retro look to my set up. Found some good little power adapters for them on Amazon that work perfectly with these little gems. Here''s the link for the power adapter: https://www.amazon.com/gp/product/B01LXYM051/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
One person found this helpful
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Jeff N
5.0 out of 5 starsVerified Purchase
Doesn''t come with an audio jack
Reviewed in the United States on June 3, 2021
I think I voided any warranty... It was exactly what I needed for my computer UV project, it works just fine, is bright enough to stand out from the other tubes and meter lights and its responsive. Its just as described, if you... See more
I think I voided any warranty... It was exactly what I needed for my computer UV project, it works just fine, is bright enough to stand out from the other tubes and meter lights and its responsive. Its just as described, if you want to add it to a stereo or use as a desk toy then remember you have to add your own audio jack, it works fine off an RCA level signal.
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Omerta
5.0 out of 5 starsVerified Purchase
👍
Reviewed in the United States on July 14, 2021
Nice little music spectrum, using old Russian magic eye tubes.
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Donald H.
5.0 out of 5 starsVerified Purchase
Cool old school "VU" meter!
Reviewed in the United States on August 17, 2021
Very cool tube "VU" display! I have it interfaced in mono, for now, another unit is ordered for two channel! It''s paired with my FU32 "Little Bear" headphone amp! Both wonderful! Now in stereo with two 6E2s!
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Top reviews from other countries

A. Reynolds
5.0 out of 5 starsVerified Purchase
Excellent Value!
Reviewed in Canada on April 10, 2020
This is a well-made, well designed product. I had doubts about how it would generate the HT for the tube plate but it seems to work superbly.
One person found this helpful
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