If you are interested in buying them, make sure the interconnect cable is there. They are made of pure unobtanium, though I haven't looked to see if there was a way to replicate them. I have 2 sets of them here that were donated to my club that I will be trying to sell. I will be selling them cheap as they don't have the cable, aren't in the best of shape, but do have the speaker. A project for sure for anyone that wants to take them on. I am hoping to find a local buyer for both sets at a good price as I don't want to go through shipping.