When you hear music or other noise, generally people’s ears are the receiver, but it can be somewhat difficult to really classify just how loud something is. You could use a sound level meter for tracking the decibel level, but for a quick visual look at how these levels are changing, this meter from Nightfire Electronics could be quite useful. It gives you a line of LEDs that show this level in yellow, green, or red. The range is adjustable, so you can make it suit your needs.
Though the meter above includes a microphone to measure noise from the environment, if you’d like something to use as a VU-meter for your custom stereo, that store has you covered as well. The unit seen below features dual level LED displays and accepts an RCA input to allow for the audio signal to come from nearly any electronic component.
While you’re checking out these two items, the Nightfire Electronics store is worth browsing through. They have four pages of products, including several noise generators and other audio equipment, as well as more general-purpose electronics like relay boards and LED kits.
