My drummer runs the following:
Board: Mackie 402-vlz3 4 channel mixer. (
http://www.mackie.com/products/402vlz3/index.html)
Ears: Shure SE-115 (I think)
Metronome: Boss Dr. beat (I think...it has a tap tempo and is programmable.)
mic: condenser mic of some sort.
Here is how he runs everything:
The mic is on a stand and pointed at his groinal region. That goes in to channel 1 on his board, giving him a super good all around drum mix.
His preferred P.A. mix (minus drums) goes to channel 2
Channel 3 goes to his metronome.
He loves it, and gets his own personalized mix.