🔊 Nobsound Magic Eye Tube Preamp 6E2 EM87: Audio Level Indicator, VU Meter, Music Spectrum. Vacuum Tube + Driver Board + Case Review

I think I've lost my warranty. It was just what I needed for my computer UV project, it works great, it's bright enough to stand out against other lamps and meter lights, and it's responsive. It's the same as described, if you want to add it to your stereo or use it as a desktop toy, remember you need to add your own audio jack, it works fine with RCA level signal.

They are really good although new to me. Wanted to add some retro pizza to my Yaqin MC13 tube amp. These did their job! Yes, the audio cables are a bit flimsy (and one of the two wires I bought snapped off the connector right away, which is an easy fix), but they're pretty pretty. Keep in mind that the package doesn't include USB power adapters, but who didn't have a box of them laying around? Something for entertainment.

Works better than expected. Got two (right and left channels) hooked up to my 1970's Pioneer SX1250 receiver. I connected them to the speaker outputs. Very easy. Adds a cool vintage retro look to my setup. I found some nice little power supplies for them at Revain that work great with these little gems. Here is 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

Brightness too high for use in a dark listening room/cinema. I had to spray the tubes with automotive taillight tint spray to keep it bearable. The amplitude adjustment for lamp sensitivity is practically useless, you can twist and twist and twist and no change. Suddenly you turn in the wrong direction. Once these small tweaks are made, they're pretty nifty and a good conversation starter for those who see them in action.

THANK YOU NOT INSTALLED BLUE LED ON IT! OR ANY LEDs! :) It responds well, seems well calibrated from the factory. nicely put together. The 5V DC are nice, my tube was a bit dirty on arrival but was cleaned well. ", and not just screws on the bottom. But that's not a problem. I had to buy two. The fact that two random units work EXACTLY like the other is AMAZING. They even heat up at the same rate.