Hi im am currently working on a special proyect and I need to take the millivots from a microphone signal and turn them from 1-10mv to something between 100-240v. So I need an amplifier to do that but I dont know wich one or if it would be better to link multiple amplifiers. This would be used to charge a phone. This is really important mi duedate for this proyect is 12/28/2012.