so after looking around here some, i see someone talked about a tda 2822m. would that be better then a 386? what i am trying to do is make an amp to hook to a 2.5" - 3" speaker and elect mic. its for a costume i am building and need this to be as thin as possible so i can install it on the inside of my front armor piece. as far as sound quality, i think this speaker is ok, i am not sure of its impedance though, and i am wondering now if i ran 2 speakers, if it would sound better with lower volume?