I'm considering adding an amp to my stock 2009 AM/FM/Sirius/CD radio with Sync. Reading the literature on the Clean Sweep, they make it sound like it is a necessity with a stock head unit. Is this true on the F-150's? Or will I be fine with good amp with speaker level inputs? I'm going for good sound quality here, but not a competition level system. Initially, I'll just have good quality replacement speakers in the doors, possibly components in the front.

 

u can of course run without it, although cleansweap would greatly improve the sound nfrom the stock hu. generally high low connect on factory sounds like a$$ after eating tacos...lol