This circuit uses two quad op-amps to form an eight LED audio level meter. The op-amp used in this particular circuit is the LM324. It is a popular IC and should be available from many parts stores.

This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels ...

An analog VU (volume unit) meter is a splendid moving-coil measuring instrument. It is a passive electromechanical device displaying a representation of the signal level in an audio equipment. Even ...

It's the brainchild of Ashdown Engineering, which makes amplifiers for some of the world's biggest musicians. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

British audio experts Meters Music’s new Cubed speaker system is unashamedly cool, due not just to the minimalist design, but mainly because of the working volume unit (VU) meter built into the body ...

Forbes contributors publish independent expert analyses and insights. Technology journalist specializing in audio, computing and Apple Macs. One thing teenagers love is playing loud music. Another ...

I promised to devote this column to a consideration of how audio metering varies in level as a function of various weighting schemes and the B.S. 1770 algorithm. However, over the past month, I’ve ...

Given its appearance in one form or another in all but the cheapest audio gear produced in the last 70 years or so, you’d be forgiven for thinking that the ubiquitous VU meter is just one of those ...

As someone operating the board, you are responsible for making sure our board does not “clip” the levels of whatever audio you are sending out. Here’s some tips/reminders about how to use them.

While high-fidelity audio has come a long way in the past several decades, a lot of modern stereo equipment is still missing out on some of the old analog meters that were common on amplifiers and ...