There are hundreds of manufacturers always producing dvices that in general do the same things. Since they have slight structural differences if you take one and fool around with it and give it a good kick it will actually do something that it wasn't designed to do. I have this relationship with my synthesizers. I've had them for so long, and I've never had them serviced, so that now practically all of their functions operate differently from what they were designed to do. They do very interesting things now, but that means nobody else can use them either.