"Jay Honeck" writes:

What the heck is an "XLR connector"?

http://froogle.google.com/froogle?q=XLR+jack
An advantage to XLR is that you can find them at Radio Shack. Having
three pins (plus ground) gives you the option of being creative; add a
power line that isn't switched by the master, or run an audio input to
your intercom, for example.

--kyleer