i'm still not big into music equipment knowledge, but my aunt just asked what kind of amp you need for a microphone and that's it. any beginner type thing would be fine, it's for my 6 yr old cousin.
keyboard amps work good... anything with an xlr input
05' G&L S-500
95' Godin LGX

96' Yamaha APX 6-A

Peavey Classic 30
Maxon OD808