The easiest way of finding this out would be if Kravitz worte what amps he used in the album liner notes. The only other way I could imgine you could find it out is if you went to a Kravitz concert, but seeing as artists often use different amps when recording, this is'nt necessarily going to get you the right amp. As for amp settings, well, I doubt that even the man himself can remember, so your best bet is to fiddle with your own settings until you find something that sounds similar.
"Dozens of people spontaneously combust each year, it's just not that widely reported".