Review on 🎶 Douk Audio 56 Bit Level Meter LED Music Spectrum Display - Enhanced Stereo Sound Indicator (Green&Orange&Red Version) by David Lambert

That's a great display! But they made a few critical mistakes. First, there is no scale, just points where colors change. There is no scale, so how much will the level change? How different is left and right? Who knows? Therefore, they have no counters at all, only indicators of the presence of sound. Next mistake, you have a good histogram and moving point. But both show the same thing. A "real" meter shows the average level on the strip, the peak on the dot. The input level control does not have sufficient range. Try plugging it into the headphone jack, it doesn't show a full scale. how much profit I have no idea, there is no scale on the counter. Last problem: no power supply. Serious. Does everyone have lots of spare chargers lying around? Not me. I received two of these. Had to buy a power adapter before trying them out. But nice packaging.