I am going to show some pictures now.
The HD650 driver assembly is on the left, the HD600/580 on the right. Mostly similar, except that the HD650’s plastic frame has a blacker color, and the silver screen area has a brighter silver color.
This is the back side, the side that faces your ears. Again the HD650’s assembly is on the left, with a brighter silver screen area.
This is the driver removed from the frame.
HD650 driver on the left, HD600/580 on the right. There are slight differences between the two, such as you can see.
A close up of the driver (HD600’s).
The wire that connects the cable connectors to the driver is very thin, hair-like thin.