Okay, yes, the amplifier is working and we're able to get some output from the microphone into it. And I suppose I should be playing a guitar through it, but I don't actually play guitar, so I don't want to embarrass myself by attempting it. Okay, this is the Harmony Guitar Amplifier. It's very small, very low-powered, but you know, for practice sessions and the like, it's not a bad choice. This was obviously 1950's technology and seems to work.