Technical Pro DB30 1U Rack Mount dB Decibel Meter Display+8 Outlet Power Supply

I love the display and the plugs on the back are a plus.

Works EXCELLENT ... *BUT* For typical home AVRs you need a "stereo signal boost" like the Douk Audio L1 Mini Stereo Line Level Booster. These various DB meters/devices on Amazon are typically configured for professional level audio equipment that works with a more powerful audio signal. Many buyers here claim that you need to turn the volume up high to see the lights. NOT NECESSARY! Get the Douk product. Setup: Connect the Douk to the PRE-AMP Out RCAs (not speaker posts) for the speakers you want visualize (Zone 2 works, too), then connect DB30 to the Douk Out RCAs. That should do it. For detailed help for your specific stereo, plug your AVR model number into a Gemini conversation window and tell Gemini what you're trying to do. Gemini will walk you through the correct AVR settings, for your equipment, to get the best results. Great light show for $100 (both DB30+Douk L1).

I have two of these. One is connected to a vintage tape recorder, and the other is connected to an equalizer in line with my laptop which is connected to a pair of powered speakers. They both are still working flawlessly after hundreds of hours of use.

I bought this to help me with audio mastering in my home studio. It works exactly as described, but might be a little more useful is the response time were slower. The meter moves so much that it is hard to figure out what the average level is. Still, it is useful to see peak volumes. For the money, you are not going to find anything better.

Adds great visual light show to my hi-fi equipment. Displaying different patterns are fun to see

My db30 also came with all rear outlets showing the hot and neutral reversed. Wired like this the unit and everything powered by it will appear to function perfectly, but it is dangerous. A fault in the db30 or within anything plugged into it may cause your grounded rack and all the metal chassies of everything plugged into the db30 to become energized, if your rack doesn't have an independent ground. Test before using. The light show is quite impressively nice. The LEDs are bright and very responsive. I can't speak to the accuracy of the metering. Given that it has level adjustment knobs, I'm guessing this thing is not designed for precise level monitoring. The case is flimsy but adequate. It mounted in my rack just fine. Once it's fixed I will keep it. One star for the unit I received based on the danger. I'd give it 4 stars if it came wired correctly based primarily on how good the lights look.

Arrived sooner than expected! That’s a nice surprise. It’s a nice little piece I use in my home audio headphone system to monitor the overall level of the sound output so I don’t lose my hearing as I like to listen to my music on the loud side. Since different songs I listen too are recorded at different levels this gives me the visual on the sound level so I can set my volume more safely. Thanks you guys great product!

The other reviews are correct, it takes some noise to get the bars to register. If you are playing with headphones, this will NOT be an issue, as the headphone levels easily satisfy the DB threshold requirements to get the lights to work. If you are playing with speakers, you might have to get a little loud for it to show up. You theoretically could connect the input for this from a multi-channel amplifier, amp this channel to max, and just not have any output for this particular channel.

Super bien conçu et super génial

at first i thought it was the rca cables i got so i got another and still dose not work. i plug them in and nothing. the led lights on but no bars.

It does work and it is easy to install, but I would have expected the off switch to shut off all the plug on the back, so that I could stop all my system at once, Like a real power bar does.