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Douk Audio

Nobsound Magic Eye 6E2 EM87 Tube Preamp; Audio Level Indicator; VU Meter; Music Spectrum; Vacuum Tube + Driver Board + Case

    • Based on 58 reviews
Condition: New
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$27.99 Why this price?
Holiday Deal · 84% off was $169.99

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Availability: 11 left in stock
Fulfilled by Amazon
Arrives Thursday, Dec 26
Order within 10 hours and 47 minutes
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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.

Voltage: 5 Volts


Manufacturer: Nobsound


Mounting Type: Surface Mount


Brand: Douk Audio


Specification Met: Em87


Package Dimensions: 5.3 x 3.5 x 3.1 inches


Item Weight: 3.2 ounces


Item model number: 6543848014


Is Discontinued By Manufacturer: No


Date First Available: December 13, 2018


Manufacturer: Nobsound


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Dec 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Plug and Play, Works Great!
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 ... show more
Reviewed in the United States on May 19, 2019 by Burgerman
    • DO NOT BUY! It Does not Work... (*Unless you want a voltage multiplier)
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
Well, despite the warnings of previous buyers, I had to find out for myself. What I received was not what was pictured. And of course, it does not work. As one previous reviewer stated: whoever designed this PCB was smoking crack that day. The traces to the tube socket do not line up to what the tube itself requires. All you'll get is a shorted out circuit. So save your money unless you want a neat little voltage divider. In order for tubes to work properly, you really have to ramp up the voltage. This circuit does so with a voltage multiplier.... A bunch of caps and diodes crank up that initial 6 volts to over 250, which in my opinion was a pretty nifty little circuit. But they had to go and ruin it by screwing up the tube socket's position; and its not something you can just pull out the socket and solder it back in the right way... Its in the PCB design. I mean, they actually copied someone's circuit and then messed up the placing of the tube socket. Its hard to explain but it looks like they got it upside down and reversed... So backwards in 2 plains. Just take a look at the pics. You can see that it is 180 degrees rotated. So the "Screen" faces the wrong way. not only does this make it look ridiculous, it shorts the whole circuit, making it worthless. It is just incredibly disappointing. This circuit had real potential. I'd love to have one that works but from reading the reviews, all they have is the same messed up design. $30 just flushed down the toilet. If for some reason, I get a replacement that works, I will absolutely change my review. But for now, this is my advice... DO NOT BUY THIS NON-WORKING HEAP OF POOR CIRCUIT DESIGN. They are trying to dump a bunch of non-working junk to as many people as possible and counting on a good percentage of them wont return it. ... show more
Reviewed in the United States on January 17, 2023 by Amazon Customer Amazon Customer
    • New items work good.
Purchased a used like new off Amazon and it had a dead short. Purchased 2 new ones and they work great.
Reviewed in the United States on January 23, 2023 by mike
    • Didn’t work day one
The tube is not facing the direction shown in pictures. The tube is crooked like this company. I plugged it in immediately shorted out luckily my power supply is protected. I’m guessing either a bad diode. I thought maybe polarity was wrong but it still didn’t work. This product could be great but who ever is Assembling these is most definitely smoking crack. This product has a QC sticker on the bottom that says passed. Seems like quality control for this company is also on crack. I would avoid this product. The $27 they charged me I’m assuming went to buy crack. I’ll take a loss this time. Crack heads 1 me 0 ... show more
Reviewed in the United States on October 27, 2022 by Peter Menasian
    • Awesome - easy to install look great!
The media could not be loaded.
Reviewed in the United States on September 7, 2023 by Lori
    • Doesn't come with an audio jack
The media could not be loaded. 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. ... show more
Reviewed in the United States on June 4, 2021 by Jeff N
    • no awful L.E.D. lights:) perfect for what it is.
Review Image by AmazonRuinsSmallBusiness AmazonRuinsSmallBusiness
Review Image by AmazonRuinsSmallBusiness AmazonRuinsSmallBusiness
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. ... show more
Reviewed in the United States on January 14, 2019 by AmazonRuinsSmallBusiness AmazonRuinsSmallBusiness
    • doesn't work and tube installed backwards & broken replacement
Review Image by michael w anderson michael w anderson
Review Image by michael w anderson michael w anderson
product does not match the listing shown and the vacuum tube is incorrectly orientated. Not only that, the device never powered on even using a adjustable power supply to meet power specifications. I had ordered another one thinking I had gotten a bad unit and the replacement was broken in the same way and didn't function. I wouldn't purchase this product until the item stock has been checked and all broken units have been removed. would leave less than a star, not cool selling broken stuff. ... show more
Reviewed in the United States on January 1, 2022 by michael w anderson michael w anderson

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