This fantastic little, high quality VU Meter was living the dream in my studio, until I modified my mixing desk. Suddenly it was blocking the path from my monitors to my ears. It was so cool and had performed so well. I tried finding another location, but to no avail. So it had to go. I was sad... It was sad... Make it happy. Make it a cool member of your studio. It's a stereo VU meter with external power supply and balanced XLR In and Thru ports. It is configurable from the front knob between: 0, -3, -6, -9, -12 and -15 db. Make it happy...