This is a vintage wooden case with a variety of different vintage equipment inside. There's a Bach Auricon E-6 microphone with the MA-11 power supply. There's a set of vintage Koss headphones, a Webcor microphone and a variety of cables as well. I'm not able to test any of it but I was told that things did work, I just don't know to what extent. The case measures 19" square and is 6" thick.