AT853rx comes with
AT8533x
Power 9-52 Volts Phantom Power
Switches 2-position: Low-Frequency Roll-Off / Flat
Input Connection Screw Terminals
Output Connection 3-pin XLR-male
Dimensions 3.58 x 0.83" (91 x 21mm) (Length x Diameter)
Weight 2.1 oz (60 grams)
AT8533a comes with
AT8531 power module
Same as above, but allows battery operation lowers dynamic range.
AT8533pmx
Comes with WALL PLATE MOUNTABLE transformer (I think that I am getting a couple of these with the white ones) The mic has bare cable and goes into the xformer with screw terminals.
Even if I just end up with 6 853 and no inline xformers, it still is a smoking deal. As of right now my rig consists of a set of Panasonic mic elements linkiwitz mod'd with a Sound Pro Pre/battery box. So I will more than likely be running 9v for a while anyway.
Seeing as all these would need to be SP mod'd would be the addition of a stereo miniplug, I still think this is a pretty good deal.