ive got a kicker comp...max output on it is 300watts...it can be used at 4ohms or 7ohms...i dont really know much at all about that stuff...what is the least expensive amp i can get that will handle that..what do i need to look for when shopping for an amp? do i have to have a 300w amp?

 

A 300 watt max, with 150 watt rms output is all you need. Your sub is 150 rms as well. A mono, or 2 channel amp with 300 watt capacity and 140-150 rms would be perfect.