As far as I'm aware, there are three microdot connectors:
1) the male cable connector (which is what is on the mic lead)
2) female panel connector (like what is on the MMA6000 preamp)
3) female barell connector (used for connecting two male dots on extention cables, custom 'Y's etc)
The male microdot connector requires a special DPA installation crimp tool. I don't think the female panel requires any special tools, but I haven't installed one. the barrel connecor has a treaded body and simply screws in to the male.
Note that I may have the gender description backwards. I'm refering to the center signal lead itself, not the threaded connection part, which is the opposite gender. Example: the barrel connector is threaded male on it's outside (like a screw), but has a female connection for the center conductor.