This looks interesting, has anyone worked with this and made something interesting?
Audio Level Indicator Stereo Music Spectrum LED light Amplifier VU Meter NEW
https://www.ebay.com/itm/174809957320
Audio Level Indicator Stereo Music Spectrum LED light Amplifier VU Meter NEW
https://www.ebay.com/itm/174809957320
If hooked up to speaker outputs, there is no data sheet on how much they can handle. I guess you could use resistance to get the level to match your output power. I have set but never used them.