Hi Alex,
Not being rude, but have you run a search on "AT933"? Plenty of info here.
Briefly:
These mics are discontinued (check ebay for deals though), and consist of:
ES943 body + adaptor + larger AT853 capsures (onmi, sub-card, card, hyper)
ES943s (AT943) are still available (see Sound Professionals CMC8 etc), but with smaller (AT943 capsules), and no adaptor.
Some people (myself included) prefer the sound of AT933 to AT943.
And yes, with bb they can easily overload at high spls, the solution is to phantom power, or to power them with 3-wire battery box.
Humbug