i know this has been asked a milion time but i cant find the answer im looking for if my radio works fine well at least seems to be but the volume is like stuck on 2 (i can hear it very faintly) but when i put the volume up or down all it does is tick for each number like a static tick or something but the volume doesnt get higher or lower. i want to keep everything in the radio oem so i want to know if i need to buy an amp or a head unit