2-channel amp
 

i currently have a mono block amp installed. i was wondering whats the differance with the 2 channel amps then a mono. should i install a 2 channel amp along with my mono? and will i notice a differance in great performance?

Basically a 2 channel can power... well, 2 channels. (say, left and right speakers)

Whereas a mono amp can only power 1 channel.

You can add a 2nd amp if you want... just make sure you know what you want to do with it. If it's to power your front set of speakers it's definitely a good idea!