This is a nice sounding microphone that adds a little bit of that tube something to the recording. Used with a decent solid state pre-amp such as a Neve (or neve clone for us mortals) and it has just the right amount of warmth, add in a tube preamp and you have just gotten a bit carried away with your quest for vintage sound. Comes with its own power supply and 7 pin cable so you can't possibly use anything else if it breaks but otherwise a nice microphone for a reasonable price.
NB if you are looking at buying one of these second hand (and they won't let you pull it apart) the bevelled ring is the clue to the early designs. If they will let you pull it apart have a look at the pictures below for the difference between the old and new.