Stam, They are XM2000's. Another thing I like about them is the Super Cardiod pattern, extremely directional with excellent feedback rejection. I saw them advertised recently on the internet as low as $20.00!!
Seem to be the same freq. response and other specs as Shure SM58.
DonM
Here's some info: http://www.progressive-concepts.com/22a.html

[This message has been edited by DonM (edited 03-28-2002).]