I am new to collecting vintage radio/stereo equipment. This past weekend I came across this item at a garage sale. I had no idea what it was, the guy was asking $10 for it, and I got him down to $5. Anything that has vintage tube amps on it, always grabs my interest. So, I loaded it up in my car, and took it home. Upon looking at it, I know that wooden cabinet is a RCA Loudspeaker 106 from the badges on it. However, the original tapestry has been replaced with some other material. Also, there is not a speaker anywhere, just a hole on the center of the front side. Now....I have been googling this nonstop, and I just can't figure out the next piece. It came with what looks like a vintage tube amp. However, I can't see how or why this was needed. Is it possible that it's not a tube amp and its the power supply? Although I have never saw a power supply like this before? It has a power on/off button, and two dials that look like they might be volume control for something. I have cleaned the item up, and there are no markings on it anywhere. It has vacuum tubes in this order: 5Z3, (2) 2A3, and (2) 56. So, I am left wondering what it is? What it was used for? Who manufactured it? I've asked around a few other forums. One has said it looks like part of a theremin. Another thought it might be from a old organ. Any help would be appreciated. It can be seen under Photos, I put one picture of it under the album names Sophiesmom. Thanks!