Cartridge gain question


What does a person look for in the specs of a preamp to determine whether to buy a high, medium or low gain phono cartridge?
rockyboy
Please disregard my original post. I should have first searched the archives on this subject. I've since found a great explanation in an old thread.
KAB Acoustics has a really neat gain calculator that can be found here:

http://www.kabusa.com/frameset.htm?/m1200.htm

It takes a lot of the guess work out of these calculations.