Review on 🎛️ Nobsound 14x24 Music Spectrum Audio Sound Level LED Meter Display Analyzer for HiFi - Black by Scott Rodriguez

My application: I build loudspeakers as a hobby. When I'm testing different combinations of speaker drivers to choose a set for a project, I usually use a real-time audio analyzer called "RTA" running on my laptop while I'm listening. The RTA display combined with audio anomalies help me weed out poorly matched drivers that would be problematic to merge. The RTA can take super accurate measurements, but they're completely over the top when I'm just trying to figure out which speaker doesn't work well with others. Also using my laptop for other measurements or changing my ever changing list of components for this project makes things difficult. What? This is one of the reasons I ordered two Audio Spectrum SPL LED displays. So far I like them, but I've had to adjust my thinking to how they represent the frequency band. Traditional audio spectrum analyzers use a logarithmic scale, which shows lots of detail in the low and mid frequencies, but compresses the entire high frequency range to about 1/4 of the graph, breaking at the right edge. These LED displays appear to use a linear scale that evenly distributes the entire frequency spectrum across the entire display. This is perfectly normal if you know this in advance and take it into account when deciphering the information on the display. Note that the LED columns are not labeled in any way. So you have to figure out the frequencies yourself. I've used these units side-by-side with the RTA software for a while to see how sounds map between two different scales. So now I have a "good enough" estimate in my head of the frequencies I see on the LEDs. Other nice touches: I was a bit surprised that these displays were somewhat customizable. There are 3 buttons on the back that you use in a combination of short and long presses to perform actions like adjusting the brightness of the LEDs or increasing/decreasing the LED refresh rate. Another pleasant surprise was that in addition to the usual Chinese instructions, a quite suitable English manual was also thrown into the box. This made it easier to understand all the settings. Part of the reason I wanted them was simply because they look cool while listening to music. I'm a big fan of visualizations in audio playback software. Yes, it might seem silly given their price, but I think if you find something that makes you that little bit happier, go for it! And that's about what you would pay for a super rare imported SACD from a famous artist. If you can afford them (or snag them on sale), I recommend buying one or two. I really liked mine and they are really useful too! And that's about what you would pay for a super rare imported SACD from a famous artist. If you can afford them (or snag them on sale), I recommend buying one or two. I really liked mine and they are really useful too! And that's about what you would pay for a super rare imported SACD from a famous artist. If you can afford them (or snag them on sale), I recommend buying one or two. I really liked mine and they are really useful too! And that's about what you would pay for a super rare imported SACD from a famous artist. If you can afford them (or snag them on sale), I recommend buying one or two. I really liked mine and they are really useful too! And that's about what you would pay for a super rare imported SACD from a famous artist. If you can afford them (or snag them on sale), I recommend buying one or two. I really liked mine and they are really useful too!